Changes in Medication Use After the Inflation Reduction Act: A Difference-in-Differences Analysis
January 30, 2026Christopher L. Cai, MD, Brigham and Women's Hospital
December 18, 2025
Yale GIM “Research in Progress” Meeting Presented by: Yale School of Medicine’s Department of Internal Medicine, Section of General Internal Medicine
About the speakers
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Transcript
- 00:02Okay. Good afternoon, everyone. Let's
- 00:04get started. Welcome to the
- 00:06last
- 00:07research in progress, meeting for
- 00:09twenty twenty five. It's great
- 00:10to see everyone here and
- 00:13online.
- 00:15Okay.
- 00:17So
- 00:20Yeah.
- 00:21So I just press,
- 00:24Okay.
- 00:26Okay. The CME code for
- 00:28today's meeting is five five
- 00:29six five eight. Five five
- 00:31six five eight.
- 00:34Just a reminder of our
- 00:35re retreat schedule. We just,
- 00:37completed our research and scholarship
- 00:39retreat
- 00:40a couple weeks ago. Have
- 00:42your calendars marked for February
- 00:43sixth
- 00:44for the professional development retreat
- 00:46and then the education retreat
- 00:49in May. It was great
- 00:50seeing everyone at the research
- 00:51and scholarship retreat.
- 00:53Thanks again, to Carrie Gross
- 00:55and Jeanette Tetreault for organizing
- 00:57what was really a spectacular
- 00:58day
- 00:59of learning for everybody.
- 01:02This is our weekly reminder
- 01:03this time of year for
- 01:04the FDAQ process. So,
- 01:07we're in step one.
- 01:09I I've seen a number
- 01:10of these,
- 01:11completed FDA queue documents come
- 01:13in.
- 01:14Please,
- 01:15get those done. The deadline
- 01:17is on the slide there,
- 01:18February second. So you do
- 01:19have time.
- 01:21But it's just a matter
- 01:22of sitting down and doing
- 01:23it as you all know,
- 01:25And the rest of the
- 01:25steps are outlined
- 01:27on the slide.
- 01:29Thanks to all who attended
- 01:31our annual,
- 01:32section holiday party. It was
- 01:34a lot of fun, a
- 01:35lot of food. We actually
- 01:36ran out of food for
- 01:37the first time, but that's
- 01:39okay. That means,
- 01:40people were well fed. And,
- 01:42of course,
- 01:43we have our
- 01:45we had our ultrasounds there.
- 01:53It's that melody there.
- 01:57That's hard.
- 01:59So,
- 02:01thanks. The ultrasounds.
- 02:05Yes. These are this is
- 02:06a medical student acapella group.
- 02:09Now we have a lot
- 02:10of acapella groups here at
- 02:11Yale, including at the medical
- 02:12school. So these guys did
- 02:14a great job.
- 02:19Okay.
- 02:21So,
- 02:22for the next two weeks,
- 02:24due to, the Christmas and
- 02:26New Year's holidays, we will
- 02:27not have meetings.
- 02:29So happy holidays,
- 02:31to everyone, and, of course,
- 02:32a happy New Year.
- 02:35And then we'll resume our,
- 02:37meetings on January eighth.
- 02:39Kelsey Bryant will be speaking
- 02:41at our general medicine grand
- 02:42rounds at seven thirty.
- 02:44I read the hypertension guidelines,
- 02:46so you don't have to.
- 02:48That'll be good.
- 02:49And then Jen Miller,
- 02:51will be here. Jen is
- 02:52here somewhere.
- 02:53Yes. There she is. Hi,
- 02:55Jen.
- 02:56She will be speaking on
- 02:57transparency, access, and ethics in
- 02:59the pharmaceutical c sector,
- 03:01an update on conceptual development
- 03:03and performance
- 03:04tracking
- 03:04with the good pharma scorecard.
- 03:07So that's
- 03:08next,
- 03:09January eighth, at seven thirty
- 03:11and at noon. Be there.
- 03:15Here's our usual disclosure slides.
- 03:17And we have a special
- 03:19out of town guest today.
- 03:20I'll have Carrie Gross
- 03:22introduce our speaker. Carrie.
- 03:28Thank you. I I will
- 03:29not be providing the harmonies,
- 03:31but we'll be providing a,
- 03:33a welcome to our guest,
- 03:35Chris Kai. So,
- 03:37Chris comes to us, well,
- 03:39now comes to us from,
- 03:41Boston and the Brigham where
- 03:42he's currently a general medicine
- 03:44fellow.
- 03:45And, I'm
- 03:46excited for a number of
- 03:47reasons to have you here.
- 03:48First of all,
- 03:50just reading your work over
- 03:52the years and actually,
- 03:53within JAMA Internal Medicine, being
- 03:55able to work with you
- 03:56on some of your manuscript
- 03:57submissions and seeing the,
- 03:59terrific, innovative, and impactful work
- 04:01you've been doing,
- 04:04leaves me really,
- 04:06excited about meeting you and
- 04:08hearing your talk today.
- 04:10Those some of you may
- 04:11remember that the original,
- 04:13lecture was supposed to be
- 04:14six weeks ago, but,
- 04:16Chris's
- 04:17baby Ezra
- 04:19had other plans. It was
- 04:20delivered pretty much, like, exactly
- 04:22at the same time as
- 04:23the the new conference was
- 04:24scheduled for.
- 04:25So,
- 04:27and kudos to
- 04:28Ezra for making his voice
- 04:30heard.
- 04:32Chris began his education,
- 04:35in Virginia. He's been out
- 04:36at UCSF for medical school
- 04:38back here to the Brigham
- 04:39for residency and,
- 04:41on the East Coast, I
- 04:42should say, for residency and
- 04:44for fellowship.
- 04:45And we're really excited to,
- 04:47welcome you here to Yale
- 04:48to talk about changes in
- 04:50medication use after the Inflation
- 04:52Reduction Act,
- 04:54difference in differences analysis.
- 04:56Thank you.
- 05:01Okay.
- 05:04So thank you so much
- 05:05for a very warm introduction.
- 05:07I'm thrilled to be here,
- 05:09and, I welcome,
- 05:11any, you know, questions or
- 05:13feedback and interruptions. So, just
- 05:15really excited to chat with
- 05:16you all. So thank you
- 05:17for having me.
- 05:19So I have about thirty
- 05:21five to forty minutes of
- 05:22material today,
- 05:24and,
- 05:25breaking it down. We'll spend
- 05:26a little bit about my
- 05:27personal background,
- 05:29review some of the prior
- 05:31work I've done as a
- 05:32resident and a fellow,
- 05:33and then
- 05:35spend about twenty five minutes
- 05:36on,
- 05:37some papers on the Inflation
- 05:39Reduction Act, which, is a
- 05:41big piece of legislation that
- 05:43totally changed the way we
- 05:45pay for prescription drugs for
- 05:46people with Medicare,
- 05:48who represent about fifty million
- 05:50people,
- 05:51in the US.
- 05:53And then I'll end with
- 05:54the preview of what I
- 05:56hope to do as a
- 05:57junior faculty member, which focuses
- 05:59on on a k award
- 06:01application to the National
- 06:03Institute on Aging.
- 06:05I wanna thank everyone who
- 06:07made this visit possible.
- 06:09My son came a little
- 06:11early,
- 06:12on the day I was
- 06:13supposed to be here, and
- 06:14so he's very excited. He's
- 06:15I know he's exploring
- 06:16New Haven with my wife
- 06:18right now, and so, these
- 06:19are some,
- 06:21photos
- 06:22to you know,
- 06:24that I just had to
- 06:24share. You know?
- 06:28So, just for background,
- 06:31you know, I grew up
- 06:32as the son of two
- 06:33Chinese immigrants, and this really
- 06:35was tremendously influential.
- 06:38I got to see what
- 06:39it was like to be
- 06:40a new American,
- 06:42some of the wonderful things
- 06:44that come with that, and
- 06:45of course, some of,
- 06:47the challenges that come with
- 06:48that.
- 06:49I remember growing up seeing,
- 06:51my parents went through periods
- 06:53where they didn't have health
- 06:54insurance. And even as a
- 06:55young kid, you begin to
- 06:57wonder, Oh, wow, like what
- 06:58how is this affecting, their
- 07:00lives? And I remember one
- 07:01story I'll share.
- 07:03My mom had a jaw
- 07:04tumor where she really delayed
- 07:06care because she didn't have
- 07:07health insurance. And,
- 07:09from a young age that
- 07:10got me interested into what,
- 07:12you know, what was going
- 07:12on and and why,
- 07:14why why these larger systems,
- 07:17existed.
- 07:19I did medical or I
- 07:20did undergrad at the University
- 07:22of Virginia, and I didn't
- 07:23really know what I wanted
- 07:24to study. I,
- 07:26you know, basically,
- 07:27did a major that really
- 07:28was a lot of anthropology
- 07:29classes.
- 07:30And I knew that I
- 07:32wanted to go into medicine,
- 07:33but wasn't sure how to
- 07:34bring it all together.
- 07:36And it wasn't until medical
- 07:37school, I, did a a
- 07:39special program at my medical
- 07:41school at UCSF,
- 07:42where you do your rotations
- 07:43at the county hospital. And,
- 07:46I began to say, okay,
- 07:47this is, like, very interesting.
- 07:49Then I got to see
- 07:50firsthand,
- 07:51how important health insurance is
- 07:53to,
- 07:54clinical outcomes. And that was
- 07:56really when I decided I'd
- 07:58like to go down this
- 07:59road of primary care and,
- 08:01health policy.
- 08:05At the time, Medicare for
- 08:06all was really at the
- 08:07national forefront of the policy
- 08:10discussion, and so I was
- 08:11motivated to try to understand
- 08:13a little bit the larger
- 08:14structural forces which,
- 08:16influenced patient care. And so,
- 08:19I spent a summer working
- 08:20in the House of Representatives
- 08:22and working on the Medicare
- 08:23for all bill. And my
- 08:24goal was to really bring
- 08:26an academic lens to a
- 08:28health care debate, which was
- 08:29really being politicized.
- 08:30And I, we we did
- 08:32studies which found
- 08:34the legislation
- 08:34could, reduce national health expenditures
- 08:37and increase resources for primary
- 08:39care. And,
- 08:40we we published those in
- 08:41journals and shared them with
- 08:42lawmakers. And this was the
- 08:44first time where I I
- 08:46thought, oh, wow. Like, if
- 08:47doing research, you can play
- 08:49a small part in the
- 08:50larger health policy debate. And
- 08:52that was very, exciting for
- 08:53me.
- 08:55I did a residency in
- 08:57internal medicine with my now
- 08:58wife, and this is one
- 08:59of the first pages that,
- 09:01we were able to send,
- 09:03to each other.
- 09:04And I think it's really
- 09:05appropriate that it's an FYI
- 09:06page. You know, you have
- 09:07to be appropriate on the
- 09:08level of triage for your
- 09:10pages. So,
- 09:11I'm glad that I, was
- 09:13able to do that, day
- 09:14one of intern year.
- 09:17I did,
- 09:18my, continuity clinic as a
- 09:20resident was at FQHC,
- 09:23and,
- 09:24federally qualified health center in
- 09:25Dorchester.
- 09:27And this was something that
- 09:29was really attractive to me
- 09:30when trying to figure out
- 09:31where I wanted to train.
- 09:32And,
- 09:33I just remember
- 09:34rotating, you know, in the
- 09:35coronary,
- 09:37academic medical center and then
- 09:38driving thirty minutes. And you
- 09:40meet patients who have never
- 09:41seen a physician and who
- 09:42have, you know, come into
- 09:44you with hemoptysis and are
- 09:46refugees from other countries. And
- 09:48it's a very humbling experience
- 09:49and really cemented my interest
- 09:51in primary care and,
- 09:53working in the social safety
- 09:55net.
- 09:57And so through these experiences,
- 09:59I've,
- 10:01zeroed in on what I
- 10:02hope is the motivating question
- 10:03for my work, which is
- 10:04how can we reform the
- 10:05way we pay for health
- 10:06care,
- 10:07in the service of promoting
- 10:09justice, efficiency,
- 10:10and patient outcomes?
- 10:12And I really see Medicare
- 10:14as the area that I
- 10:15would like to focus on
- 10:17the first few years as
- 10:17a junior faculty member.
- 10:20And though I've branched out
- 10:21and looked at other aspects
- 10:23of healthcare financing and payment
- 10:24reform, like private equity and,
- 10:27the generic drug marketplace.
- 10:30And in terms of methods,
- 10:31as a resident and a
- 10:33medical student, I really focused
- 10:34on descriptive methods, like time
- 10:37trends, systematic reviews,
- 10:39and as a fellow, have
- 10:40tried to gain more skills
- 10:41in quasi experimental methods,
- 10:44including pharmacoepidemiology
- 10:46and and, techniques from the
- 10:48econometrics,
- 10:49literature, like difference in differences.
- 10:53So hoping to spend a
- 10:54few minutes just talking about
- 10:55some of the work I've
- 10:56done and then,
- 10:57dive more deeply into a
- 10:59study that I think has
- 11:00a lot of clinical relevance,
- 11:01on the Inflation Reduction Act.
- 11:05So as a resident,
- 11:06I did a series of
- 11:08studies looking at racial disparities
- 11:09and, high value diabetes medications,
- 11:13finding that,
- 11:14unsurprisingly,
- 11:16minority patients are less likely
- 11:18to receive SGLT twos and
- 11:20GLP ones,
- 11:22which could be because of
- 11:23lower visit rates to, specialist,
- 11:26physicians who at the time
- 11:27were much more likely to
- 11:28prescribe these medications.
- 11:31Building on my prior interest
- 11:33in Medicare policy,
- 11:35did a series of studies
- 11:36with, colleagues and, looking at
- 11:39the receipt of supplemental benefits,
- 11:41dental, vision, and hearing in,
- 11:43Medicare Advantage,
- 11:45which is a very important
- 11:46policy debate because Medicare Advantage
- 11:49is paid more to provide
- 11:50these benefits. And we found
- 11:51that,
- 11:52in a series of studies
- 11:53that patients don't actually receive
- 11:55those benefits at a higher
- 11:56rate.
- 11:57And so this has implications
- 11:59for the way we pay
- 11:59for, Medicare Advantage.
- 12:03And as a fellow, really
- 12:04focused on prescription drug policy
- 12:06work.
- 12:07So,
- 12:08we looked at a program
- 12:10that would have capped out
- 12:11of pocket costs to two
- 12:12dollars for generic medications,
- 12:15and found that it would
- 12:16only save about ten dollars
- 12:17annually,
- 12:18for thirty eight percent of
- 12:19Medicare beneficiaries.
- 12:22And we use this to,
- 12:23we shared the results with
- 12:25CMS,
- 12:26Center for Medicare and Medicaid
- 12:27Services Administrators. And we tried
- 12:29to use this data to,
- 12:31generate more evidence based policy
- 12:33proposals and to make the
- 12:35policy more generous.
- 12:38And finally,
- 12:40looking at one one another
- 12:41analysis we did was to
- 12:42look at, the patent,
- 12:44marketplace,
- 12:45and we found that we
- 12:47looked at one case example
- 12:48of doxepin, which is a
- 12:50medication for sleep,
- 12:52a first line medication recommended
- 12:54by sleep societies.
- 12:56And we looked at a
- 12:56very interesting scenario where despite
- 12:58being a fifty year old
- 12:59medication,
- 13:01a dose of Doxepin was
- 13:03actually patented, which is a
- 13:04very unusual case, where a
- 13:06generic medication was patented because
- 13:08of a lower dose. And
- 13:11we showed that this patent
- 13:12likely resulted in much higher
- 13:13prices
- 13:14and,
- 13:16likely limited access to a
- 13:18first line medication
- 13:19for sleep
- 13:20and led to a lot
- 13:21of excess spending in addition
- 13:23to that.
- 13:26You know, one goal that
- 13:27I had as a fellow
- 13:28was to try to build
- 13:29skills in pharmacoepidemiology,
- 13:31and target trial emulation
- 13:33and propensity score weighting,
- 13:36and to try to get
- 13:37more at causal questions. And
- 13:38so
- 13:40to address that,
- 13:42we did a new user
- 13:43analysis.
- 13:44And the basic question for
- 13:46this study was looking at,
- 13:48does private equity, which are
- 13:49investment firms, which,
- 13:51have been purchasing hospitals, clinics,
- 13:53and nursing homes,
- 13:55do they contribute to a
- 13:56higher risk of bankruptcy or
- 13:58closure?
- 13:59And you may have seen
- 14:00in the news the closure
- 14:01of hospitals like Henneman Hospital
- 14:03or Stewart Healthcare in Boston
- 14:05and Philadelphia.
- 14:07And if you talk to
- 14:07people at PE firms, they
- 14:09say, well, we really we
- 14:10buy hospitals that are going
- 14:12to close anyway. We focus
- 14:13on distressed assets.
- 14:15And to try to address
- 14:16that potential confounding, we did
- 14:18a new user analysis where
- 14:20we looked at healthy hospitals,
- 14:22clinics, and nursing homes, which
- 14:24had good finances. And we
- 14:25compared them to
- 14:27other hospitals, clinics, and nursing
- 14:28homes that,
- 14:30had very similar, finances, but
- 14:31were purchased by other,
- 14:34for profit firms that were
- 14:36for profit, but not private
- 14:37equity.
- 14:38And we, addressed potential confounding
- 14:41using propensity score weighting.
- 14:44And using this this new
- 14:45user active comparator framework, we
- 14:47found that the private equity
- 14:49acquired
- 14:50healthcare organizations were about three
- 14:52times higher,
- 14:53more likely to experience,
- 14:55the prespecified
- 14:56composite outcome of, bankruptcy or
- 14:58closure.
- 14:59So we hope that this
- 15:00contributes to literature and, ongoing,
- 15:03congressional legislation, which would regulate,
- 15:06these investment firms, which,
- 15:08could potentially be contributing to
- 15:10a higher risk of bankruptcy
- 15:11or closure.
- 15:14So a little bit about
- 15:15my background and and now
- 15:17hoping to focus on, what
- 15:19I think is gonna be
- 15:20the the focus of my
- 15:22early years as a FACT
- 15:23team member, and that's Medicare
- 15:24policy and specifically
- 15:26looking at the Inflation Reduction
- 15:28Act.
- 15:30So as many of you
- 15:31may know, this is a
- 15:33the Inflation Reduction Act is
- 15:34a really big piece of
- 15:35legislation. It was passed in
- 15:37twenty twenty two.
- 15:38It touched many parts of
- 15:40the economy.
- 15:41It took a lot of
- 15:42political will to get across
- 15:43the finish line. And so,
- 15:46important to understand what it
- 15:47did it did not do,
- 15:49and also to,
- 15:51make sure we get it
- 15:51right, because it's probably the
- 15:53largest piece of health care
- 15:54legislation since the Affordable Care
- 15:56Act.
- 15:57And so we'll be focusing
- 15:59on Medicare Part D, which
- 16:00is the prescription drug benefit
- 16:02for, that the Inflation Reduction
- 16:04Act, reformed.
- 16:06And just for background, Medicare
- 16:08Part D, it's a voluntary
- 16:09prescription drug benefit. And so
- 16:11when you become eligible for
- 16:12Medicare, you can buy
- 16:14insurance to cover your prescription
- 16:16drugs, and fifty million people
- 16:18in the country
- 16:19have some sort of Medicare
- 16:21part d.
- 16:22This is a public benefit.
- 16:24We all pay for it
- 16:25with our tax dollars, and
- 16:26it is administered through private
- 16:28plans.
- 16:29And there are two types
- 16:30of private plans. You can
- 16:31get Medicare Advantage, which provides
- 16:33wraparound care, inpatient,
- 16:35outpatient,
- 16:37and prescription drug, or you
- 16:39can get traditional Medicare and
- 16:41supplement it. So a little
- 16:42complicated, but they're all private
- 16:44plans,
- 16:45and beneficiaries
- 16:46shop for them through,
- 16:48a regional marketplace.
- 16:50And so that is the
- 16:52background. And what was the
- 16:53problem the legislation was aiming
- 16:55to address, which, well, that
- 16:56is Medicare patients historically have
- 16:58paid very high out of
- 17:00pocket costs if they took
- 17:01expensive drugs.
- 17:02And so it's a very
- 17:03complicated benefit historically.
- 17:06There was the deductible,
- 17:08there was initial coverage, and
- 17:10then somehow it got worse
- 17:11after a while. You may
- 17:12have heard of the donut
- 17:13hole, and then there was
- 17:14the catastrophic phase.
- 17:16The bottom line is that
- 17:18historically,
- 17:19costs were not capped. And
- 17:20so you could pay ten,
- 17:22fifteen, twenty thousand dollars out
- 17:23of pocket if you were
- 17:25unfortunate enough to, you know,
- 17:26be diagnosed with cancer or
- 17:28if you had rheumatoid arthritis,
- 17:29if you were taking an
- 17:30expensive medication.
- 17:33And you paid five percent
- 17:34indefinitely,
- 17:35even in the most generous
- 17:36phase, the catastrophic phase.
- 17:38And so that's a lot
- 17:40of wonky information, a very
- 17:42complicated benefit. And I think
- 17:43it's really helpful to illustrate,
- 17:45this with some patients who
- 17:46you, likely have seen. So,
- 17:49we'll take Mr. A on
- 17:50the left. He's a seven
- 17:51year old man with hypertension,
- 17:53atrial fibrillation, hyperlipidemia.
- 17:55And then, Mrs. B, same
- 17:58conditions, but she has chronic
- 17:59lymphocytic leukemia.
- 18:01And here are the medications
- 18:03they take. These are likely
- 18:04gonna look familiar to you.
- 18:06And then the monthly costs.
- 18:08And you'll see right away,
- 18:09for mister a, the majority
- 18:11of the monthly price, the
- 18:13prices,
- 18:14are absorbed by apixaban or
- 18:16Eliquis brand name.
- 18:18And then for missus b,
- 18:19she's taking the same medications,
- 18:21but now she's taking imbrutinib,
- 18:22which is a very costly
- 18:24medication effective, but very costly,
- 18:26for her CLL.
- 18:28And so if those are
- 18:30the prices and if you
- 18:31just do the algebra that
- 18:32we saw on the last
- 18:33slide, the complicated benefit, this
- 18:35is how much they would
- 18:35pay per year. So Mr.
- 18:37A is paying about six
- 18:38hundred per year and then,
- 18:39oh, wow, Mrs. Buchi's paying
- 18:41about fifteen thousand.
- 18:42And that's because you take
- 18:43the price of Imbrutinib
- 18:45and you just run it
- 18:46through the four phases.
- 18:47And because it's a two
- 18:49hundred thousand dollars a year
- 18:50medication, even if you pay
- 18:51a small amount, dollars five
- 18:52percent, it just starts to
- 18:53really add up. And so
- 18:55this is really the problem
- 18:56the law zeroed in on.
- 18:57We have these patients
- 18:58like Mrs. B who are
- 19:00paying untenable amounts for their
- 19:01medications.
- 19:03And so what did the
- 19:04law do? It imposed an
- 19:06out of pocket cap. And
- 19:07so in twenty twenty four,
- 19:09that cap was thirty three
- 19:10hundred dollars, and then it
- 19:11was lowered to two thousand
- 19:12dollars in twenty twenty five.
- 19:14And an important feature of
- 19:16the law was that these
- 19:17private plans were now tasked
- 19:19with paying a large proportion
- 19:21of that. And so now
- 19:22these private plans, you go
- 19:24on a marketplace, they have
- 19:25to pay. It's about sixty
- 19:26percent of all costs above
- 19:28the cap. And so we're
- 19:30asking these private plans, like,
- 19:31to in a in a
- 19:32noble fashion to to pay
- 19:33more to cover patients like
- 19:35missus Speed.
- 19:36And so this is a
- 19:38brand new benefit. Twenty twenty
- 19:39five is the first time
- 19:40this two thousand dollar out
- 19:42of pocket cap was imposed.
- 19:43And so,
- 19:45some studies that my colleagues
- 19:46and I have have attempted
- 19:47to do was to assess
- 19:49insurer responses. And so we
- 19:51know that these are private
- 19:52entities. We know that they
- 19:53are likely
- 19:54to respond in a fairly
- 19:56predictable fashion.
- 19:57Number one, could they leave
- 19:58the marketplace?
- 20:00Could they raise deductibles or
- 20:01the amount that you have
- 20:03to pay as a patient
- 20:04before the plan kicks in?
- 20:06Could they modify a formulary?
- 20:07Could they make it more,
- 20:08you know, more difficult or
- 20:09more costly to access these
- 20:11medications?
- 20:12Or premiums, the the gym
- 20:13membership, the monthly peep payment
- 20:15you have.
- 20:16With the asterisk there that
- 20:18the law really prevented that
- 20:19from happening, they subsidized the
- 20:21premiums.
- 20:22So we didn't think that
- 20:23was really going to happen.
- 20:25And so that's objective number
- 20:26one of my fellowship, a
- 20:28series of studies looking at
- 20:29what did the insurers do
- 20:30when they had to provide
- 20:32much more generous coverage.
- 20:34We used publicly available data,
- 20:37from the Medi Center for
- 20:38Medicare and Medicaid Services, and
- 20:39we looked at all, of
- 20:41these private plans.
- 20:42And consistent with those hypothesized
- 20:45insurer responses, we calculated,
- 20:47the,
- 20:48the enrollee weighted and inflation
- 20:50adjusted,
- 20:51percent of people who were
- 20:52affected by their insurer totally
- 20:54leaving,
- 20:55out of pocket costs for
- 20:56nine top selling medications.
- 20:59We looked at whether a
- 21:00medication was paid by a
- 21:01co payment, which is typically
- 21:02a flat amount, thirty to
- 21:04forty dollars, or coinsurance,
- 21:05which is typically a percent
- 21:07of a drug's cost,
- 21:08with the idea that coinsurance
- 21:10is typically much more because
- 21:11it's, you know, thirty percent
- 21:12of a thousand or five
- 21:14hundred. So it just ends
- 21:15up being much more.
- 21:16And then we looked at
- 21:17deductibles and premiums.
- 21:20We looked at different subgroups
- 21:21as well, and this was
- 21:22a partially descriptive analysis.
- 21:26And so on the x
- 21:27axis here, you have year.
- 21:29On the y axis, you
- 21:30have the percent of people
- 21:32who were affected by their
- 21:33insurance plan just totally leaving,
- 21:35the marketplace.
- 21:37And, you know, bef
- 21:39a priority that could be
- 21:40a really bad thing. Right?
- 21:41It leads to disruptions in
- 21:43coverage.
- 21:44This is a voluntary benefit,
- 21:45so people might not even
- 21:46know. They may, you know,
- 21:48basically, in January, they may
- 21:49be like, oh, I don't
- 21:50have health insurance anymore for
- 21:51my medications.
- 21:53And you can see that
- 21:54essentially over time, consistent with
- 21:56the implementation of the law,
- 21:58more and more people are
- 21:59affected by their insurer just
- 22:00leaving. And so by twenty
- 22:02twenty four, the most recent,
- 22:03year of data we have
- 22:04available,
- 22:06eight percent of people,
- 22:07are just
- 22:08in that year,
- 22:10they had no prescription drug,
- 22:12insurance, that their insurer just
- 22:13totally left. And so unless
- 22:15they took the effort to
- 22:17go to open enrollment and
- 22:18to find another insurer, they
- 22:20they no longer had, prescription
- 22:22drug, coverage.
- 22:24This, unfortunately, was consistent too
- 22:26in different, subgroups of insurance
- 22:28plans.
- 22:30We looked at deductibles. And
- 22:32I I think on the
- 22:33x axis here, you see
- 22:34year, and on the y
- 22:35axis, the inflation adjusted deductible.
- 22:37And I think the key
- 22:38thing to highlight is there's
- 22:39a huge jump for Medicare
- 22:40Advantage plans, which were charging
- 22:42about sixty six dollars on
- 22:44average in twenty twenty four,
- 22:45which was trending down. And
- 22:47then, there's a large increase
- 22:48to twenty twenty five when
- 22:49the two thousand dollar cap
- 22:51was implemented,
- 22:52about a hundred and sixty
- 22:53dollar increase.
- 22:55In the stand alone plans,
- 22:56a more gentle increase that
- 22:58really predated when the law
- 22:59was implemented.
- 23:02Here are nine top selling
- 23:03medications, and we we assess
- 23:05what the monthly out of
- 23:06pocket cost would be.
- 23:08And you can see these
- 23:09are high value medications. They're
- 23:11used to treat diabetes,
- 23:13atrial fibrillation.
- 23:16They they
- 23:17CKD, and they have very
- 23:19high clinical value.
- 23:21And you can see here
- 23:22on,
- 23:23the x axis is year
- 23:25again, and the y axis,
- 23:26the monthly costs. And unfortunately,
- 23:28a similar trend where the
- 23:29costs are increasing in twenty
- 23:31twenty five in both in
- 23:33both kinds of plans by
- 23:34about thirty three percent.
- 23:38This is basically explaining what
- 23:40caused,
- 23:41these costs to go up.
- 23:42This is the percent of
- 23:43people who paid coinsurance, which
- 23:45is that percent of a
- 23:46drug's cost.
- 23:47And and, essentially, that is
- 23:49what's explaining it. People are
- 23:50shifting from these thirty dollar
- 23:52co payments per month for
- 23:53brand name medications to a
- 23:55coinsurance, which could be hundreds
- 23:56of dollars per month.
- 24:00And just to say it
- 24:00briefly, we saw that the
- 24:02premiums decreased as expected, and
- 24:04they were subsidized by by
- 24:06the legislation.
- 24:08So a lot of data
- 24:10there, and I think illustrative
- 24:11to take our two example
- 24:12patients and run them through
- 24:14those numbers and, and see
- 24:16what the net effect is.
- 24:18As I also think it's
- 24:19helpful to know that the
- 24:21government estimates only about twenty
- 24:22percent of people are gonna
- 24:23hit the cap. And so
- 24:24most people are like Mr.
- 24:26A, They're taking maybe one
- 24:27brand name medication and maybe
- 24:29a few generic medications. But,
- 24:32but all about twenty percent
- 24:33of people are, like, gonna
- 24:34be like, missus b.
- 24:36And when you do the
- 24:37math, this is sort of
- 24:38the net effect of the
- 24:39law in twenty twenty five.
- 24:41Both patients,
- 24:42experience
- 24:43increases in deductibles.
- 24:45But the key is that
- 24:46patients like mister a are
- 24:48not hitting the cap, whereas
- 24:50patients like missus b are.
- 24:52And so at the end
- 24:53of the day, we find
- 24:55that if you if based
- 24:56on these averages,
- 24:58if you're a patient like
- 24:59mister a, you're not hitting
- 25:00the cap, you may pay
- 25:01actually more under this legislation,
- 25:03whereas patients like missus b
- 25:05are paying less.
- 25:06Yeah.
- 25:08Thank you, Chris. So twenty
- 25:10percent of beneficiary
- 25:12are
- 25:13on the visa.
- 25:16And generally speaking, the purpose
- 25:18of insurance
- 25:19is that
- 25:21the way I put it,
- 25:22but the healthy people are
- 25:23a subscriber
- 25:24of the of the.
- 25:26So if we institute a
- 25:27new shield, which is,
- 25:30we're saying that
- 25:47does the out of pocket
- 25:48cost from the eighty percent
- 25:50of the fifty percent, would
- 25:51that totally,
- 25:53make up for the reduction
- 25:56in patient responsibility?
- 25:59Like, Like, is this
- 26:00all just a complete unintended
- 26:03consequences for it now? The
- 26:04beneficiary
- 26:05are just completely
- 26:07paying the full amount of
- 26:08additional,
- 26:10additional coverage, or, conversely, is
- 26:13this, like, more general tax
- 26:14dollars?
- 26:17Yeah. I think it's a
- 26:18really good question.
- 26:21You know, I think you're
- 26:22totally right. That's, like, the
- 26:24social purpose of insurance to
- 26:26spread risk. And so, you
- 26:28know, in some ways, you
- 26:29could say, like,
- 26:30this is sort of why
- 26:32we have insurance, and, like,
- 26:33maybe this is not a
- 26:34bad thing.
- 26:35I think that
- 26:37there could be an argument
- 26:38that, like, the sum is
- 26:39is less than their parts
- 26:41because what we see is,
- 26:43and it's not shown here,
- 26:44but because of a lot
- 26:46of plans are leaving the
- 26:47marketplace,
- 26:48we have a follow-up study
- 26:49that shows that
- 26:50the lack of competition leads
- 26:52to way less generous plans.
- 26:54And so,
- 26:55that is sort of what
- 26:56I mean by the sum
- 26:57is not just you know,
- 26:58like, I think the amount
- 26:59of money that is going
- 27:00to the ultimately trickling down
- 27:02to beneficiaries could be less
- 27:03because competition is is is
- 27:05less is one way to
- 27:06address that.
- 27:08And then the other piece
- 27:09of it is that,
- 27:10you know, that eighty percent
- 27:11number is based on estimates,
- 27:13historical data. But one worry
- 27:15I have is I see
- 27:16patients who are like Mr.
- 27:18A, but they,
- 27:20or I'm sorry, are like
- 27:21Mrs. B, but she is
- 27:22not there. They're not hitting,
- 27:23they're not, they don't have
- 27:24two thousand dollars to pay.
- 27:26So they may eventually hit
- 27:27the cap if, if they
- 27:28just fill their medications, but
- 27:30they see a higher deductible
- 27:31and they go to the
- 27:32pharmacy and they're like, why,
- 27:34woah, my medications cost way
- 27:35more. And you want to
- 27:37say to them, I know,
- 27:38but if, but in March,
- 27:39you're gonna hit the cap.
- 27:40And so you have to
- 27:41pay through, unfortunately.
- 27:43But I think we're gonna
- 27:44see a scenario where because
- 27:45the deductibles went up, that
- 27:47discourages people from filling their
- 27:49medications. And that ultimately may
- 27:51mean that fewer people than
- 27:52expected
- 27:53benefit from the law is
- 27:54one worry I have. I
- 27:55don't know if that is
- 27:56gonna bear out, but that,
- 27:57I think, could be a
- 27:58potential consequence.
- 27:59You're gonna measure that?
- 28:01I think you really just
- 28:02have to go back. And
- 28:03so the government that eighty
- 28:05percent number is from, like,
- 28:06I think, twenty nineteen data.
- 28:08Just thinking that I think
- 28:09is a very important Yeah.
- 28:11That do you have any
- 28:12way of detecting?
- 28:14Yeah. That's a good question.
- 28:15You know, one I'll show
- 28:17you some data that suggests
- 28:19that, in January twenty twenty
- 28:20five, fills go down a
- 28:22little bit, but then they
- 28:22quickly recover. So that
- 28:25we'll have to really wait
- 28:25for the claims, the person
- 28:27level data. But in population
- 28:28level data, we see that
- 28:30the fills actually
- 28:31decrease, which is concerning.
- 28:36Fine. I'll I'll first, two
- 28:38questions. First,
- 28:39please repeat questions from the
- 28:40audience so that Oh, yes.
- 28:42Okay. Great.
- 28:44Microphone's on, so we should
- 28:45be good.
- 28:46And second,
- 28:47I thought
- 28:48is for well, David Rosenthal.
- 28:50Do you wanna just jump
- 28:51on?
- 28:52Yeah. Sure. Thank you so
- 28:53much. I just, ibrutinib is
- 28:54one of the drugs that's
- 28:55gonna, I think, adjust, correct,
- 28:56in twenty twenty six. I'm
- 28:57just curious how that's gonna
- 28:59change these mister a, mister
- 29:01b out of pocket costs
- 29:02or your your modeling.
- 29:04You're totally right. So, yeah,
- 29:05it it is it's one
- 29:07of the medications, as you
- 29:08point out, that is subject
- 29:09to price negotiation. So
- 29:11a whole separate arm of
- 29:13the legislation empowered Medicare to
- 29:15negotiate prices. And so
- 29:18I think that it hopefully,
- 29:21on the one hand, it
- 29:22it won't really make a
- 29:22difference for missus b. She's
- 29:23gonna pay two thousand dollars
- 29:25anyway, but I think the
- 29:26theory is that, okay, the
- 29:28medication costs less, the insurers
- 29:29pay less, and then eventually,
- 29:31that will help other patients.
- 29:34Only a select group of
- 29:35medic of medications are,
- 29:37eligible for negotiation.
- 29:38So I think a bigger
- 29:40picture takeaway from this data
- 29:41is that we really should
- 29:43be empowering Medicare to negotiate
- 29:44all drugs. Right? And that
- 29:46that is the way to
- 29:47have your cake and eat
- 29:48it too. Right? We're we
- 29:49know of we're trying to
- 29:50get people to take more
- 29:51medications. And if you don't
- 29:53want cost to go up,
- 29:54you should allow the government,
- 29:55like any other payer, to
- 29:57negotiate prices.
- 30:01Just to support that point,
- 30:03the VA has been able
- 30:04to negotiate prices for many
- 30:05years and has effectively halved
- 30:07the cost. Yeah. So I
- 30:09totally agree. That's a very
- 30:10good point. Yeah. We have
- 30:12a very nice, you know,
- 30:13health system to look to
- 30:14for for guidance there and
- 30:16the, you know, the reasons
- 30:17for
- 30:18those stipulations.
- 30:20Restricting negotiation are are not
- 30:22really evidence based or the
- 30:24result of lobbying.
- 30:26So I wanna make sure
- 30:27I get enough time for
- 30:29quest, for discussion. So,
- 30:31I'm gonna skip ahead to
- 30:33the second study I was
- 30:34going to present, which is
- 30:35to look at the effects
- 30:36of the law of medication
- 30:37use, which I think is
- 30:39actually a little bit more
- 30:39interesting. So,
- 30:41big picture, this is a
- 30:42difference in differences analysis. We
- 30:44have a
- 30:45control group, and then we
- 30:47have a treatment group. We
- 30:48see what happens to both
- 30:49after an intervention, and then
- 30:51we compare those differences.
- 30:53We used, a database called
- 30:55Symphony Metis, which is a
- 30:56retail all pair pharmacy claims
- 30:58database.
- 31:00And it has data at
- 31:01the drug level. So it's
- 31:02population data. There's no individual
- 31:05level data,
- 31:06but it provides very timely
- 31:08analyses. We have data from
- 31:10actually, like, last week in
- 31:11there.
- 31:12We linked
- 31:13that prescription fill data to
- 31:15pricing data,
- 31:16and we included about three
- 31:18thousand medications.
- 31:19We excluded medications which had
- 31:21no fills in twenty twenty
- 31:22two, the first quarter of
- 31:24our study period, and also
- 31:26vaccine and insulin formulations, which
- 31:28underwent separate reforms during the
- 31:30period.
- 31:31And our key outcome was
- 31:32prescription fills per capita.
- 31:34And we calculated this as
- 31:36a weighted change from baseline.
- 31:38And so we were basically
- 31:40assessing medication use.
- 31:42We hypothesized
- 31:43that the higher cost drugs
- 31:45would increase more. And so
- 31:46we divided medications into different
- 31:47buckets based on their monthly
- 31:49price.
- 31:50And so these are sort
- 31:51of arbitrary cutoffs, but we
- 31:52tried to make cutoffs that
- 31:53were based on out of
- 31:54pocket costs. And so, for
- 31:56example,
- 31:57if a medication costs more
- 31:58than eight hundred and thirty
- 31:59dollars per month, patients have
- 32:00to pay typically more out
- 32:02of pocket for that because
- 32:03the medication is called a
- 32:04specialty medication.
- 32:07And we did a difference
- 32:08of difference.
- 32:09We chose commercial as our
- 32:11control group. The the Inflation
- 32:13Reduction Act did not really
- 32:14affect the commercial population, so
- 32:16we hypothesized that use would
- 32:17be,
- 32:18fairly stable there, and we
- 32:20compared that to use in
- 32:21the Medicare population.
- 32:23We had some seasonal,
- 32:25and drug level fixed effects.
- 32:27We evaluated the parallel trends
- 32:28assumption,
- 32:30just using a simple regression.
- 32:32And then we had a
- 32:33more conservative value for
- 32:35statistical significance given that we
- 32:36did four tests,
- 32:38consistent with our four different,
- 32:40monthly pricing groups.
- 32:43We did various subgroup analyses
- 32:45looking at the most common
- 32:46medications, different diseases.
- 32:48And we knew the law
- 32:49was implemented in January twenty
- 32:50twenty four, and so that
- 32:52is when deductibles reset. And
- 32:53so that's a potential confounder.
- 32:55And so we had a
- 32:56falsification analysis where we we
- 32:59pretended that the law was
- 33:00implemented in twenty twenty three
- 33:01and reran all of our
- 33:02analyses to see if, okay,
- 33:04was it really the the
- 33:05year the law was in
- 33:06lit, or was it the
- 33:07deductibles
- 33:11so some some data here,
- 33:13this is just the table
- 33:14of medications at the drug
- 33:15level and set. And you
- 33:17you'll note that the low
- 33:18cost drugs, less than a
- 33:19hundred dollars per month,
- 33:20are the most common. About
- 33:22half of the cohort is
- 33:23there.
- 33:24And then by the time
- 33:24you get to the very
- 33:25high cost drugs,
- 33:27it's only a hundred and
- 33:27fifty medications, but they're responsible
- 33:29for a large proportion of
- 33:30spending.
- 33:32And to add some color,
- 33:33you see these are the
- 33:34most common medications, atorvastatin,
- 33:37apixaban,
- 33:39Biktarvy. And I like to
- 33:40use the generic name, but
- 33:41the brand name is, like,
- 33:42so catchy when there are
- 33:43three drugs, so I just
- 33:45kinda cave.
- 33:46And then, Ofev, which is
- 33:48a medication for, interstitial,
- 33:50lung disease.
- 33:53We evaluated what's called the
- 33:54parallel trends assumption. We wanna
- 33:56make sure that the two
- 33:57groups are
- 33:59moving in parallel prior to
- 34:00the law of being implemented.
- 34:03And so that is ideal,
- 34:04right, if one is going
- 34:05up and one's going down.
- 34:05And how can you really
- 34:06tell if if it's the
- 34:08if it's the policy?
- 34:09And this is the statistical
- 34:11test we did, which suggests
- 34:13that, controlled for seasonality,
- 34:15the two groups were essentially
- 34:16moving
- 34:17in in parallel.
- 34:19I think it's more intuitive
- 34:20just to look at it
- 34:21visually. And so here's,
- 34:23here's the the preliminary results
- 34:25based on that data.
- 34:27A lot in this slide,
- 34:28I'll walk you through it.
- 34:30The blue is commercial, which
- 34:31is our control group. And
- 34:32so
- 34:33and then the red is
- 34:34our treatment group, Medicare.
- 34:36And so what you have
- 34:37on the x axis is
- 34:39time, and then on the
- 34:40y axis, a change from
- 34:41baseline.
- 34:43So everything starts at zero
- 34:44because that's the baseline. And
- 34:45then over time,
- 34:47you see growth in use
- 34:48or, you know, decreases in
- 34:50use. And this is all
- 34:51before the policy was implemented.
- 34:53So
- 34:54what you would hope for
- 34:55from a research perspective is
- 34:56that the two groups, if
- 34:57they don't overlap, at least
- 34:58they, they are moving in
- 34:59parallel.
- 35:00And you can see qualitatively,
- 35:02the big caveat is the
- 35:04confidence intervals are very wide,
- 35:05but qualitatively, they they match
- 35:07the statistical test that you
- 35:08saw on the prior slide.
- 35:09The two groups are moving
- 35:11similar.
- 35:14Sorry to interrupt.
- 35:15How do you account for
- 35:16the I I know it's
- 35:17marginal increases in numeric numbers
- 35:20of eligible Medicare adults over
- 35:22time as the population is
- 35:24aging slightly just in terms
- 35:25of thinking about
- 35:27change?
- 35:28Yeah. So that's a good
- 35:29question. And,
- 35:31what I should have said
- 35:32is that this was
- 35:34a a prescription fills per
- 35:36capita.
- 35:37Yeah. So we, yeah, we
- 35:38added,
- 35:40that,
- 35:41denominator.
- 35:43And I should've I should've
- 35:44said that on the prior
- 35:45slide.
- 35:46Okay. So that's all. This
- 35:48is all before the law,
- 35:48and they are if I've
- 35:50you know, my argument that
- 35:51they're very similar, and then
- 35:52this is after the law
- 35:53was implemented.
- 35:55And so I'll walk you
- 35:56through and then just quote,
- 35:58like what the picture suggests,
- 35:59and then we'll add some
- 36:00numbers to this. And one
- 36:01is here's the low cost
- 36:03medications. I would argue they
- 36:04are very similar. There's not
- 36:06really a change.
- 36:07Medium, there is some divergence,
- 36:09but it's hard to tell.
- 36:10The common denominators are wide.
- 36:12High, maybe a little bit
- 36:13more. And then very high,
- 36:14you see a clear divergence
- 36:16where the very high cost
- 36:18medication use is soaring in
- 36:19the Medicare population where it's
- 36:21maybe going down or the
- 36:23same in commercial.
- 36:25And so this is adding
- 36:26some numbers to that.
- 36:28What you see here is
- 36:29the difference in difference in
- 36:30the post intervention period. That's
- 36:32the summary metric here. And
- 36:33then the dots just represent
- 36:35that over time. And so
- 36:37overall, the low cost medications,
- 36:40there was a one percent
- 36:41point estimate, but it wasn't
- 36:42significant.
- 36:43Medium,
- 36:45four percent, but not significant.
- 36:47High,
- 36:48six percent, but not significant.
- 36:50And then the very high,
- 36:52consistent with our last graph,
- 36:53you see a a sixteen
- 36:55percent difference in difference,
- 36:57which is is statistically significant.
- 37:02So,
- 37:03that's a good question.
- 37:05You know, what we see
- 37:06is that, you know, use
- 37:06is going up in both
- 37:08groups. And so
- 37:10Exactly.
- 37:11Start covering.
- 37:12Right. So I
- 37:15we we should definitely do
- 37:16a, like, a sensitivity
- 37:17there.
- 37:19You know, it's weighted by
- 37:21it's weighted by prescriptions.
- 37:24And so
- 37:27because,
- 37:28Medicare
- 37:29hadn't covered it for weight
- 37:30loss, and so the very
- 37:32expensive versions that we talked
- 37:34That's true. Yeah.
- 37:35Probably not very much simple.
- 37:38Yeah.
- 37:39Yeah. So I I should
- 37:40go back and do that.
- 37:45Yeah. My my guess is
- 37:46that, you know, despite being
- 37:48very costly, they represent,
- 37:50like, less than one percent,
- 37:51I would guess, of total
- 37:53prescriptions. So my guess is
- 37:54that the numbers would be
- 37:55very similar, but maybe that
- 37:56would be, like, a separate
- 37:57analysis you could just do
- 37:58and and show, like,
- 38:00what percent of the cost
- 38:01is being attributed to that.
- 38:03But thank you for pointing
- 38:04that. Okay. I should write
- 38:05this down to
- 38:08One more question. Just so
- 38:09your summary estimates are all
- 38:11five quarters averaged, but you're
- 38:13clearly seeing
- 38:14it's not like you're not
- 38:15just reporting on your fifth
- 38:16quarter.
- 38:17Right?
- 38:19Yeah. So I think that's
- 38:20a really good point too
- 38:21that, you know, clearly,
- 38:23the trend is not stable
- 38:24over time.
- 38:26And, I mean, so one
- 38:27way you could think about
- 38:28it is you could look
- 38:28at the most recent quarter
- 38:29as the most illustrative. And
- 38:31so,
- 38:32thank you for pointing that
- 38:33out. And so when you
- 38:35look at that, it's like,
- 38:36okay. Now it's the if
- 38:37you just go straight to
- 38:38the very high cost group,
- 38:39it's a thirty five percent
- 38:40increase, which is I think
- 38:42that's, like, pretty significant, and
- 38:43you see the clear dose
- 38:44response too.
- 38:47And this is based on
- 38:47June twenty twenty five data,
- 38:49and so we could update
- 38:50this. And I wonder what
- 38:51where that number would be.
- 38:52Maybe it'd be, like, forty
- 38:53percent, fifty percent. We don't
- 38:55know.
- 38:57And so
- 38:58It would change. Not relative.
- 39:00Right? That's a thirty five
- 39:01percentage point difference between the
- 39:03two.
- 39:04Right. An absolute thirty five
- 39:06percent. Yeah. Which I think
- 39:07is quite large.
- 39:10And so,
- 39:12we'll get into the implications
- 39:13of that, which I think
- 39:14are interesting. So this is,
- 39:16like, our false test. We
- 39:17wanted to see, was it
- 39:18really the law, or was
- 39:19it just twenty twenty three?
- 39:20And I think the takeaway
- 39:21is visually, you see not
- 39:23much is going on in
- 39:24twenty twenty three. And when
- 39:25you repeat all the analyses,
- 39:27there's a lot of noise,
- 39:28but the point estimates essentially
- 39:30are are small or are
- 39:31they, decrease over time.
- 39:35And so I'll bring it
- 39:36back to the patients we
- 39:37saw at the very beginning.
- 39:38Here are the medication, some
- 39:40very common medications those patients
- 39:41were taking as,
- 39:43amlodipine
- 39:44use.
- 39:45We found, you can see
- 39:46here's the individual level difference
- 39:48in difference. We saw a
- 39:49three percent increase.
- 39:51Apixaban,
- 39:52about a five percent.
- 39:54I'll put aside Biktarvy for
- 39:56a moment and return to
- 39:57it. But Ibrutinib use went
- 39:59about eighteen percent. And so,
- 40:01that is the classic, you
- 40:02know, this is exactly what
- 40:03we thought when we had
- 40:04our two example patients, mister
- 40:06a and missus b.
- 40:07At a population level, you
- 40:09see a huge increase in
- 40:10Ibrutinib use,
- 40:12largely because patients like missus
- 40:13Bierp, they're probably hitting the
- 40:14cap, and they're not having
- 40:15to pay more for it.
- 40:18And so what do we
- 40:18make about the negative result
- 40:20for the HIV medications?
- 40:22You know, a little disappointing.
- 40:23We want people to take
- 40:24their Biktarvy. This is a
- 40:25very high value medication.
- 40:28And indeed, it's actually true
- 40:29for all antiretroviral
- 40:30medications. When you look at
- 40:32the class effect, there is
- 40:33no increase. I mean, it's
- 40:34the only class of medications
- 40:35we don't observe an increase.
- 40:38Here's the raw data for
- 40:40for the, HIV medications,
- 40:45and my interpretation of this
- 40:46is that
- 40:48maybe in this you know,
- 40:49we have Ryan White programs.
- 40:50We have Medicaid.
- 40:53This is a major buffer
- 40:54here. Yeah. Yeah. I totally
- 40:56agree. And so I want
- 40:57this is almost like a
- 40:58negative control where it's like,
- 40:59okay. If I had been
- 41:01smart enough to, you know,
- 41:02prespecify this, maybe this would
- 41:04have been a nice negative
- 41:05control. But,
- 41:06you know, post hoc, that's
- 41:08how I interpret that data.
- 41:10I I
- 41:11there are multiple sources of
- 41:13of support for HIV meds
- 41:15that aren't included in the
- 41:16data. So Yeah. Yeah.
- 41:19So,
- 41:20that's a really good point.
- 41:21And so I think big
- 41:22picture, you know, there are
- 41:23a lot of limitations to
- 41:24this population level analysis, and
- 41:26I would love to get
- 41:26your feedback.
- 41:28I'm hoping to follow this
- 41:28up with a patient level
- 41:30analysis for, my k award
- 41:32application.
- 41:34And, you know, there these
- 41:35two populations are very different.
- 41:36Medicare and commercial
- 41:38is is a very big
- 41:40limitation.
- 41:41My hope is that we
- 41:42did drug level analyses. And
- 41:44so you're just looking at
- 41:45people taking napixaban, that that
- 41:46is gonna be more similar
- 41:47than the two populations
- 41:49at large.
- 41:52So in conclusion, the inflation
- 41:53reduction act was associated with,
- 41:56an increase in medication use,
- 41:57particularly for high cost drugs.
- 41:59This could represent improved access.
- 42:01However,
- 42:02not all patients are affected
- 42:04equally, and we know that
- 42:05insurers may respond again.
- 42:07And this could represent both
- 42:09high and low value use.
- 42:10And so in a follow-up
- 42:11analysis,
- 42:12we look at the in
- 42:13the oncology space, and we
- 42:14see that low value care
- 42:15actually increases more.
- 42:17Medications that don't prolong life,
- 42:19that don't improve quality of
- 42:21life increase,
- 42:22about threefold, whereas the other
- 42:24medications,
- 42:25twenty percent ish. So,
- 42:28I think that is potentially
- 42:29concerning. You know, we want
- 42:30patients be taking the best
- 42:31medications, and, ultimately, everyone is
- 42:33paying for that. And so
- 42:34I think that could be
- 42:35an unintended consequence where low
- 42:37value care increases
- 42:38after this cap, and then
- 42:40that those costs are shifted
- 42:42around.
- 42:43So So I think there
- 42:44definitely are there's a need
- 42:45for additional studies, and,
- 42:48I think a clear implication
- 42:49of this data is that
- 42:50there's a need for,
- 42:52expanded price negotiation.
- 42:55Yeah. I have a a
- 42:55question. I mean, so, obviously,
- 42:56you have an interesting background.
- 42:58Were you, like, been on
- 42:58the Hill or sort of
- 42:59around around the Hill before.
- 43:01What's your sense of, like,
- 43:02when the IRA was written
- 43:03that this was like, there
- 43:04was modeling done ahead of
- 43:05time or they anticipated some
- 43:07of these changes might happen?
- 43:08Like, how much is this
- 43:09like, oh, man. We didn't
- 43:09know what was gonna happen,
- 43:10or there's actually kinda what
- 43:11we expected was gonna happen
- 43:13when we implemented,
- 43:15these policy changes.
- 43:16Yeah. It's, so the question
- 43:18was, yeah, how much of
- 43:18this is was planned and,
- 43:20you know, you know, could
- 43:21could we have prevented this,
- 43:23if I summed that up
- 43:23right? And I I think
- 43:24it's a really good point.
- 43:25You know, some of it
- 43:26seems kinda predictable.
- 43:28You know,
- 43:29the so the law lawmakers
- 43:31did plan for the premium
- 43:32spikes so that there are
- 43:33subsidies to address that,
- 43:36probably because premiums are very
- 43:37politically salient. You know, peep
- 43:39patients experience them every month.
- 43:43The, you know, the CBO,
- 43:45the Congressional Budget Office found
- 43:46that the law would save
- 43:47money, actually, in total, driven
- 43:50by the negotiated prices.
- 43:52I don't think they thought
- 43:54that the use would go
- 43:55up this much, and so
- 43:56I think it's important to
- 43:57update that. And,
- 43:58they just put out a
- 43:59call for data, and we're
- 44:00we're gonna meet with the
- 44:01CBO to kinda see, like,
- 44:03compare our models and see
- 44:04what if anything, like, if
- 44:06there were any differences there.
- 44:09And so that is sort
- 44:10of what I I think.
- 44:11I think that people thought
- 44:12the premiums would go up,
- 44:13and they tried to address
- 44:14it, but it's, like, kinda
- 44:15whack a mole situation, unfortunately.
- 44:18Do you have any thoughts
- 44:20about future work in the
- 44:21sense of, like, given these
- 44:22results,
- 44:23thinking about either inappropriate versus
- 44:25appropriate medication prescribing and or
- 44:27are,
- 44:29prescribers, clinicians substituting
- 44:31higher cost meds now that
- 44:32they know their patients can
- 44:34afford them? And so they're
- 44:35less likely
- 44:36to prescribe
- 44:37therapeutic alternatives as in generics
- 44:39or whatever and and just
- 44:40like, oh, now you can
- 44:41have the Cadillac. Everyone gets
- 44:42a Cadillac.
- 44:44Yeah. Yeah. And so I
- 44:45think that's really a good
- 44:47question.
- 44:48I mean, a couple things.
- 44:49Like, one is, like, there's
- 44:51there's now a clear incentive
- 44:53if you are if you
- 44:53have cancer and you're taking
- 44:55an infusion and there is
- 44:56an oral medication.
- 44:58So infusions are not subject
- 44:59to this cap, the part
- 45:01their part b. So
- 45:03I that's, like, something that
- 45:04you could look at if
- 45:05is there a substitution between
- 45:06infusions and to to part
- 45:08d? Like, there's one. And
- 45:10then as you pointed out
- 45:11within class,
- 45:13I didn't put put it
- 45:14on on
- 45:15in my slides, but I
- 45:16I I believe, like, brand
- 45:17name proton pump inhibitor use,
- 45:19I saw, like, goes way
- 45:20up, which is obviously low
- 45:22value when you have generic
- 45:23alternatives that are clinically interchangeable.
- 45:25So there's probably a lot
- 45:26you could do there.
- 45:29You know, other examples,
- 45:30I think in our dataset,
- 45:32you know, antipsychotic use goes
- 45:34up for long acting injectables,
- 45:35which are very expensive. And
- 45:36so I think that's an
- 45:38open question of whether that
- 45:39is a good or bad
- 45:40thing. It could be good
- 45:41if you're switching from the
- 45:42orals to the LAIs, and,
- 45:44like, that seems great. Like,
- 45:45now patients who cannot afford
- 45:47that are are getting that.
- 45:48It could be bad if
- 45:49it just enables people to
- 45:51get antipsychotics
- 45:52that are, of course, associated
- 45:53with mortality. And so I
- 45:55there's, like, a lot you
- 45:55could you could do
- 45:57there,
- 45:58and I'd love to get
- 45:59your feedback on, like, you
- 46:01know, are any of these
- 46:02interesting or what I should
- 46:03do next.
- 46:04So build building off of
- 46:05that of Joe's question and
- 46:07and your answer, so concomitant
- 46:09with this sort of timeline
- 46:10in the last few years,
- 46:12These real time prescription benefits
- 46:14are now being integrated into
- 46:15EHRs and are about to
- 46:16be mandated to be,
- 46:19included. And and I wonder
- 46:21how you build in that,
- 46:23the impact of those on
- 46:24prescribing, especially when it comes
- 46:26to within class alternate
- 46:27alternatives. Because that's what they're
- 46:28meant to do. Right? They're
- 46:29meant to trigger clinicians
- 46:32to choose lower cost options,
- 46:35or lower cost pharmacies. But,
- 46:38anyway, I I think it's
- 46:39important to Yeah. Incorporate that
- 46:41or think about that as
- 46:42we I think that'd be
- 46:43a really interesting study,
- 46:45and
- 46:46I guess you would need
- 46:47EHR data to do it.
- 46:50And,
- 46:53I mean, I think on
- 46:54a population level, it's it's
- 46:55worth asking, like, should some
- 46:57medications not be subject to
- 46:58the cap if they're like
- 47:00like, maybe, like, brand name
- 47:01proton pump inhibitors, we don't
- 47:02cap costs for that. And
- 47:03then,
- 47:04you know, maybe it leads
- 47:05to a week delay when
- 47:07you, you know, maybe you
- 47:08you it's frustrating as a
- 47:09clinician and as a patient.
- 47:10You don't get your proton
- 47:11pump inhibitor for a week
- 47:13because you clicked the you
- 47:14know, you clicked it and,
- 47:15oh, it's not covered and
- 47:16you have to go through
- 47:17that. But ultimately, relatively low
- 47:19stakes for most patients, and
- 47:21it is sort of something
- 47:22that is clearly not indicated.
- 47:24So stuff like that, I
- 47:25think, could be reasonable.
- 47:27But, you know, it's it's
- 47:28tough to
- 47:30change laws and to implement
- 47:31with that amount of nuance.
- 47:33So I don't know. I
- 47:34I think that's a really
- 47:35good question. I think those
- 47:36tools are probably gonna be
- 47:37very helpful.
- 47:39I mean, I think in
- 47:40a related point is to
- 47:41what extent have these changes
- 47:44exacerbated the problem of polypharmacy?
- 47:47Yeah.
- 47:48Low value use anyway.
- 47:51It's sort of a double
- 47:52whammy. Yes. Yeah. Totally. So
- 47:53you could look at potentially
- 47:55inappropriate medication use and
- 47:57yeah.
- 48:00This is really interesting. I
- 48:01was curious, though, in in
- 48:02looking at, like, some of
- 48:03these plans and especially the
- 48:04commercial plans, maybe more so
- 48:05than Medicare or even met
- 48:06MA, like, looking at utilization
- 48:08managements or techniques that they've
- 48:10been employing to actually dissuade
- 48:11you low value care. Because
- 48:12you'd imagine where the brand
- 48:14name, like, program pump inhibitors,
- 48:16they would just say, we're
- 48:17just gonna move it to,
- 48:17like, a different tier, right,
- 48:19and, like, put in fire
- 48:20off and put in these
- 48:21sorts of barriers.
- 48:23So are you seeing in
- 48:23response to this
- 48:25changes from how formulas are
- 48:27being structured
- 48:29as a result
- 48:30of, like, the caps and
- 48:31whatnot?
- 48:32Yeah.
- 48:33We didn't assess that.
- 48:36Other colleagues have looked at,
- 48:38changes in prior auth for
- 48:40medications and have, for whatever
- 48:42reason, they didn't really change.
- 48:44So I don't I was
- 48:44actually surprised by that.
- 48:46The cohort of medications that,
- 48:48this is work by, like,
- 48:49Stacy Dusetzina
- 48:50that she's led,
- 48:52were, like, top selling brand
- 48:54name medications. So,
- 48:56maybe prior auth change for
- 48:58other medications, but,
- 48:59we didn't see that. And
- 49:01then, the formulary tier point
- 49:02you make is is good
- 49:03is a good one.
- 49:05We,
- 49:06let me see if I
- 49:07have this.
- 49:09We looked at
- 49:11different,
- 49:17these are different tiers for
- 49:19different medications and,
- 49:21oh, sorry.
- 49:22This is the next slide.
- 49:23Slide. So this is on
- 49:24the x axis. You have
- 49:25year, and then the y
- 49:26axis, the the tier.
- 49:28And none of these medications
- 49:30really changed their tier before
- 49:31and after the law. So,
- 49:33you can see the lot
- 49:34it basically, the lines are
- 49:35basically just, like, straight lines.
- 49:37So,
- 49:38maybe we should do that
- 49:39for more medications, but at
- 49:40least on first pass, they
- 49:41didn't really change.
- 49:48Okay. I'll take silence as
- 49:50approval.
- 49:54Okay. I'll just,
- 49:55outline my future,
- 49:57plans, which is really to
- 49:58focus on a k award
- 50:00application.
- 50:01I'm hoping to apply for
- 50:02a Beeson award,
- 50:04this October.
- 50:06And then,
- 50:07so,
- 50:08here are the illustrative faculty
- 50:10I would like to work
- 50:11with,
- 50:12and my training and research
- 50:14aims.
- 50:16I really wanna focus on
- 50:17getting better at causal inference,
- 50:18and so training aim one
- 50:20would be,
- 50:21looking at methods and, or
- 50:23sorry, matching,
- 50:25and then two is to
- 50:26deepen my knowledge of geriatric,
- 50:28specific outcomes,
- 50:30and then my,
- 50:32actual research aims. I think
- 50:33I you know, all of
- 50:35this is interesting population level
- 50:36data, but really important to
- 50:38validate and expand upon it
- 50:39in the Part d claims
- 50:40data. And so you can
- 50:42see the research aims are
- 50:43to, you know, assess changes
- 50:45in use, assess changes in
- 50:46outcomes, and then, assess, treatment
- 50:49heterogeneity.
- 50:51And then what I'm hoping
- 50:52to do, in a few
- 50:53years, if the NIA still
- 50:55exists, would be to apply
- 50:56for an r o one.
- 50:59And then here's sort of
- 51:01my timeline. I'm hoping to
- 51:02apply for that in,
- 51:04this October, which I know
- 51:05is aggressive,
- 51:06but starting to work on
- 51:07that now.
- 51:09And then,
- 51:10I just submitted a grant
- 51:11with with colleagues that would
- 51:12be portable to to look
- 51:14at
- 51:15parts of the Inflation Reduction
- 51:16Act in partnership with, Express
- 51:18Scripts, which is a PBM,
- 51:19a pharmacy benefit manager.
- 51:21There is a program that
- 51:22would smooth out of pocket
- 51:23costs over the calendar year
- 51:25that could address some of
- 51:26this.
- 51:27So that's sort of the
- 51:28timeline of what I'm hoping
- 51:29to, to do in the
- 51:31next couple of years.
- 51:33Okay.
- 51:35At the risk of overstuffing
- 51:36this time period with too
- 51:38many more slides, I'll pause
- 51:39there. And and thank you
- 51:41all for for your feedback.
- 51:42It's truly an,
- 51:43obviously a privilege to present,
- 51:45and, you know, your engagement
- 51:47means a lot. So I'll
- 51:48I'll go back and make
- 51:49those changes,
- 51:51to to this to this
- 51:52paper. And so I really
- 51:53appreciate all your time.