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Marek Chawarski, PhD

Professor of Psychiatry and Emergency Medicine; Affiliated Faculty, Yale Institute for Global Health

Research & Publications
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Selected Publications

Evaluation of toxicity profile of kratom (Mitragyna speciosa Korth) decoction in ratsHassan Z, Singh D, Suhaimi F, Chear N, Harun N, See C, Kaur G, Mat N, Bakar S, Yusof N, Kasinather V, Chawarski M, Murugaiyah V, Ramanathan S. Evaluation of toxicity profile of kratom (Mitragyna speciosa Korth) decoction in rats. Regulatory Toxicology And Pharmacology 2023, 143: 105466. PMID: 37536550, DOI: 10.1016/j.yrtph.2023.105466.
Kratom withdrawal: Discussions and conclusions of a scientific expert forumHenningfield J, Chawarski M, Garcia-Romeu A, Grundmann O, Harun N, Hassan Z, McCurdy C, McMahon L, Sharma A, Shoaib M, Singh D, Smith K, Swogger M, Vicknasingam B, Walsh Z, Wang D, Huestis M. Kratom withdrawal: Discussions and conclusions of a scientific expert forum. Drug And Alcohol Dependence Reports 2023, 7: 100142. DOI: 10.1016/j.dadr.2023.100142.
Perspectives on and experiences of emergency department–initiated buprenorphine among clinical pharmacists: A multi-site qualitative studyJusten M, Edelman E, Chawarski M, Coupet E, Cowan E, Lyons M, Owens P, Martel S, Richardson L, Rothman R, Whiteside L, O'Connor P, Zahn E, D'Onofrio G, Fiellin D, Hawk K. Perspectives on and experiences of emergency department–initiated buprenorphine among clinical pharmacists: A multi-site qualitative study. Journal Of Substance Abuse Treatment 2023, 209058. PMID: 37149149, DOI: 10.1016/j.josat.2023.209058.
Perspectives of Clinicians and Staff at Community-Based Opioid Use Disorder Treatment Settings on Linkages With Emergency Department–Initiated Buprenorphine ProgramsSue K, Chawarski M, Curry L, McNeil R, Coupet E, Schwartz R, Wilder C, Tsui J, Hawk K, D’Onofrio G, O’Connor P, Fiellin D, Edelman E. Perspectives of Clinicians and Staff at Community-Based Opioid Use Disorder Treatment Settings on Linkages With Emergency Department–Initiated Buprenorphine Programs. JAMA Network Open 2023, 6: e2312718. PMID: 37163263, PMCID: PMC10173026, DOI: 10.1001/jamanetworkopen.2023.12718.
Implementation Facilitation to Promote Emergency Department–Initiated Buprenorphine for Opioid Use DisorderD’Onofrio G, Edelman E, Hawk K, Chawarski M, Pantalon M, Owens P, Martel S, Rothman R, Saheed M, Schwartz R, Cowan E, Richardson L, Salsitz E, Lyons M, Freiermuth C, Wilder C, Whiteside L, Tsui J, Klein J, Coupet E, O’Connor P, Matthews A, Murphy S, Huntley K, Fiellin D. Implementation Facilitation to Promote Emergency Department–Initiated Buprenorphine for Opioid Use Disorder. JAMA Network Open 2023, 6: e235439. PMID: 37017967, PMCID: PMC10077107, DOI: 10.1001/jamanetworkopen.2023.5439.
Kratom withdrawal: Discussions and conclusions of a scientific expert forumHenningfield J, Chawarski M, Garcia-Romeu A, Grundmann O, Harun N, Hassan Z, McCurdy C, McMahon L, Sharma A, Shoaib M, Singh D, Smith K, Swogger M, Vicknasingam B, Walsh Z, Wang D, Huestis M. Kratom withdrawal: Discussions and conclusions of a scientific expert forum. Drug And Alcohol Dependence Reports 2023, 7: 100142. PMID: 37397437, PMCID: PMC10311168, DOI: 10.1016/j.dadr.2023.100142.
Analgesic effects of main indole alkaloid of kratom, mitragynine in acute pain animal modelMat N, Bakar S, Murugaiyah V, Chawarski M, Hassan Z. Analgesic effects of main indole alkaloid of kratom, mitragynine in acute pain animal model. Behavioural Brain Research 2022, 439: 114251. PMID: 36503042, DOI: 10.1016/j.bbr.2022.114251.
Missed Opportunities for HIV and Hepatitis C Screening Among Emergency Department Patients With Untreated Opioid Use DisorderLyons MS, Chawarski MC, Rothman R, Whiteside L, Cowan E, Richardson LD, Hawk K, Tsui JI, Schwartz RP, O’Connor P, D’Onofrio G, Fiellin DA, Edelman EJ. Missed Opportunities for HIV and Hepatitis C Screening Among Emergency Department Patients With Untreated Opioid Use Disorder. Journal Of Addiction Medicine 2022, 17: 210-214. PMID: 36170184, PMCID: PMC10023471, DOI: 10.1097/adm.0000000000001074.
Perspectives About Emergency Department Care Encounters Among Adults With Opioid Use DisorderHawk K, McCormack R, Edelman EJ, Coupet E, Toledo N, Gauthier P, Rotrosen J, Chawarski M, Martel S, Owens P, Pantalon MV, O’Connor P, Whiteside LK, Cowan E, Richardson LD, Lyons MS, Rothman R, Marsch L, Fiellin DA, D’Onofrio G. Perspectives About Emergency Department Care Encounters Among Adults With Opioid Use Disorder. JAMA Network Open 2022, 5: e2144955. PMID: 35076700, PMCID: PMC8790663, DOI: 10.1001/jamanetworkopen.2021.44955.
Legal challenges in providing treatment for people who use drugs (PWUDs) in MalaysiaVicknasingam B, Salleh N, Ramadah R, Singh D, Kamarulzaman A, Chawarski MC. Legal challenges in providing treatment for people who use drugs (PWUDs) in Malaysia. International Journal Of Drug Policy 2021, 97: 103311. PMID: 34111680, PMCID: PMC8585679, DOI: 10.1016/j.drugpo.2021.103311.
Application of Chinese version of behavioral activation for depression scale in patients in methadone maintenance treatmentMa H, Chen Y, Yan H, Liu P, Wang X, Daughters S, Chawarski M, Zhou W. Application of Chinese version of behavioral activation for depression scale in patients in methadone maintenance treatment. Chinese Journal Of Behavioral Medicine And Brain Science 2021, 30: 459-464. DOI: 10.3760/cma.j.cn371468-20200723-01586.
COVID-19 Impact on Healthcare and Supportive Services for People Who Use Drugs (PWUDs) in MalaysiaVicknasingam B, Salleh N, Chooi WT, Singh D, Zaharim N, Kamarulzaman A, Chawarski MC. COVID-19 Impact on Healthcare and Supportive Services for People Who Use Drugs (PWUDs) in Malaysia. Frontiers In Psychiatry 2021, 12: 630730. PMID: 33854449, PMCID: PMC8039131, DOI: 10.3389/fpsyt.2021.630730.
Substance Use Problems/Disorders in Individuals with ASDØien R, Nordahl-Hansen A, Chawarski M. Substance Use Problems/Disorders in Individuals with ASD. 2021, 4671-4673. DOI: 10.1007/978-3-319-91280-6_102122.
A qualitative study of emergency department patients who survived an opioid overdose: Perspectives on treatment and unmet needsHawk K, Grau LE, Fiellin DA, Chawarski M, O’Connor P, Cirillo N, Breen C, D’Onofrio G. A qualitative study of emergency department patients who survived an opioid overdose: Perspectives on treatment and unmet needs. Academic Emergency Medicine 2021, 28: 542-552. PMID: 33346926, PMCID: PMC8281441, DOI: 10.1111/acem.14197.
Behavioral counseling and abstinence‐contingent take‐home buprenorphine in general practitioners’ offices in Malaysia: a randomized, open‐label clinical trialSchottenfeld RS, Chawarski M, Mazlan M. Behavioral counseling and abstinence‐contingent take‐home buprenorphine in general practitioners’ offices in Malaysia: a randomized, open‐label clinical trial. Addiction 2021, 116: 2135-2149. PMID: 33404150, DOI: 10.1111/add.15399.
Emergency department patients with untreated opioid use disorder: A comparison of those seeking versus not seeking referral to substance use treatmentCoupet E, D’Onofrio G, Chawarski M, Edelman E, O’Connor P, Owens P, Martel S, Fiellin DA, Cowan E, Richardson L, Huntley K, Whiteside LK, Lyons MS, Rothman RE, Pantalon M, Hawk K. Emergency department patients with untreated opioid use disorder: A comparison of those seeking versus not seeking referral to substance use treatment. Drug And Alcohol Dependence 2020, 219: 108428. PMID: 33307301, PMCID: PMC8110210, DOI: 10.1016/j.drugalcdep.2020.108428.
Use of Amphetamine-Type Stimulants Among Emergency Department Patients With Untreated Opioid Use DisorderChawarski MC, Hawk K, Edelman EJ, O'Connor P, Owens P, Martel S, Coupet E, Whiteside L, Tsui JI, Rothman R, Cowan E, Richardson L, Lyons MS, Fiellin DA, D'Onofrio G. Use of Amphetamine-Type Stimulants Among Emergency Department Patients With Untreated Opioid Use Disorder. Annals Of Emergency Medicine 2020, 76: 782-787. PMID: 32782084, PMCID: PMC8048036, DOI: 10.1016/j.annemergmed.2020.06.046.
Kratom and Pain Tolerance: A Randomized, Placebo-Controlled, Double-Blind Study.Vicknasingam B, Chooi WT, Rahim AA, Ramachandram D, Singh D, Ramanathan S, Yusof NSM, Zainal H, Murugaiyah V, Gueorguieva R, Mansor SM, Chawarski MC. Kratom and Pain Tolerance: A Randomized, Placebo-Controlled, Double-Blind Study. The Yale Journal Of Biology And Medicine 2020, 93: 229-238. PMID: 32607084, PMCID: PMC7309661.
Barriers and Facilitators to Clinician Readiness to Provide Emergency Department–Initiated BuprenorphineHawk KF, D’Onofrio G, Chawarski MC, O’Connor P, Cowan E, Lyons MS, Richardson L, Rothman RE, Whiteside LK, Owens PH, Martel SH, Coupet E, Pantalon M, Curry L, Fiellin DA, Edelman EJ. Barriers and Facilitators to Clinician Readiness to Provide Emergency Department–Initiated Buprenorphine. JAMA Network Open 2020, 3: e204561. PMID: 32391893, PMCID: PMC7215257, DOI: 10.1001/jamanetworkopen.2020.4561.
Randomized Controlled Trial of Paliperidone Extended Release Versus Risperidone for the Treatment of Methamphetamine-Associated Psychosis in Chinese PatientsWang G, Ding F, Chawarski MC, Hao W, Liu X, Deng Q, Ouyang X. Randomized Controlled Trial of Paliperidone Extended Release Versus Risperidone for the Treatment of Methamphetamine-Associated Psychosis in Chinese Patients. Frontiers In Psychiatry 2020, 11: 237. PMID: 32296355, PMCID: PMC7141424, DOI: 10.3389/fpsyt.2020.00237.
The reliability and validity of Reward Probability Index-Chinese version applied among individuals with opioid dependenceYan H, Chen Y, Ma H, Xie N, Wang X, Daughters S, Chawarski M, Zhou W. The reliability and validity of Reward Probability Index-Chinese version applied among individuals with opioid dependence. Chinese Journal Of Behavioral Medicine And Brain Science 2020, 29: 172-176. DOI: 10.3760/cma.j.cn371468-20190916-00622.
Improved sexual functioning of long-term daily users of Mitragyna speciosa (Korth.)Singh D, Grundmann O, Murugaiyah V, Bin Muhammad Rahim A, Chawarski M, Balasingam V. Improved sexual functioning of long-term daily users of Mitragyna speciosa (Korth.). Journal Of Herbal Medicine 2020, 19: 100293. DOI: 10.1016/j.hermed.2019.100293.
260 Perceptions and Experiences of Emergency Department Patients With Opioid Use DisorderHawk K, McCormack R, Edelman E, Coupet E, Toledo N, Gauiter P, Rotrosen J, Chawarski M, 0069 and 0079 and Researchers C, Fiellin D, D'Onofrio G. 260 Perceptions and Experiences of Emergency Department Patients With Opioid Use Disorder. Annals Of Emergency Medicine 2019, 74: s102. DOI: 10.1016/j.annemergmed.2019.08.218.
Implementation facilitation to promote emergency department-initiated buprenorphine for opioid use disorder: protocol for a hybrid type III effectiveness-implementation study (Project ED HEALTH)D’Onofrio G, Edelman EJ, Hawk KF, Pantalon MV, Chawarski MC, Owens PH, Martel SH, VanVeldhuisen P, Oden N, Murphy SM, Huntley K, O’Connor P, Fiellin DA. Implementation facilitation to promote emergency department-initiated buprenorphine for opioid use disorder: protocol for a hybrid type III effectiveness-implementation study (Project ED HEALTH). Implementation Science 2019, 14: 48. PMID: 31064390, PMCID: PMC6505286, DOI: 10.1186/s13012-019-0891-5.
Substance Use Problems/Disorders in Individuals with ASDØien R, Nordahl-Hansen A, Chawarski M. Substance Use Problems/Disorders in Individuals with ASD. 2019, 1-3. DOI: 10.1007/978-1-4614-6435-8_102122-1.
5EMF Developing an Emergency Department-Based Intervention to Prevent Opioid Overdose: Listening to Patient VoicesHawk K, Grau L, Fiellin D, Pantalon M, Chawarski M, O'Connor P, D'Onofrio G. 5EMF Developing an Emergency Department-Based Intervention to Prevent Opioid Overdose: Listening to Patient Voices. Annals Of Emergency Medicine 2018, 72: s155. DOI: 10.1016/j.annemergmed.2018.08.402.
Decriminalization of drug useVicknasingam B, Narayanan S, Singh D, Chawarski M. Decriminalization of drug use. Current Opinion In Psychiatry 2018, 31: 300-305. PMID: 29746420, DOI: 10.1097/yco.0000000000000429.
Atomoxetine for amphetamine-type stimulant dependence during buprenorphine treatment: A randomized controlled trialSchottenfeld RS, Chawarski MC, Sofuoglu M, Chooi WT, Zaharim NM, M Yasin MA, Ahmad I, Syed Jaapar SZ, Vicknasingam BK. Atomoxetine for amphetamine-type stimulant dependence during buprenorphine treatment: A randomized controlled trial. Drug And Alcohol Dependence 2018, 186: 130-137. PMID: 29573648, PMCID: PMC5911201, DOI: 10.1016/j.drugalcdep.2018.01.017.
Past‐year Prescription Drug Monitoring Program Opioid Prescriptions and Self‐reported Opioid Use in an Emergency Department Population With Opioid Use DisorderHawk K, D'Onofrio G, Fiellin DA, Chawarski MC, O'Connor PG, Owens PH, Pantalon MV, Bernstein SL. Past‐year Prescription Drug Monitoring Program Opioid Prescriptions and Self‐reported Opioid Use in an Emergency Department Population With Opioid Use Disorder. Academic Emergency Medicine 2017, 25: 508-516. PMID: 29165853, PMCID: PMC5963969, DOI: 10.1111/acem.13352.
Cost‐effectiveness of emergency department‐initiated treatment for opioid dependenceBusch SH, Fiellin DA, Chawarski MC, Owens PH, Pantalon MV, Hawk K, Bernstein SL, O'Connor PG, D'Onofrio G. Cost‐effectiveness of emergency department‐initiated treatment for opioid dependence. Addiction 2017, 112: 2002-2010. PMID: 28815789, PMCID: PMC5657503, DOI: 10.1111/add.13900.
Early Initiation of Amphetamine-Type Stimulants (ATS) Use Associated with Lowered Cognitive Performance among Individuals with Co-Occurring Opioid and ATS Use Disorders in MalaysiaChooi WT, Zaharim N, Desrosiers A, Ahmad I, Yasin MAM, Jaapar S, Schottenfeld RS, Vicknasingam BK, Chawarski MC. Early Initiation of Amphetamine-Type Stimulants (ATS) Use Associated with Lowered Cognitive Performance among Individuals with Co-Occurring Opioid and ATS Use Disorders in Malaysia. Journal Of Psychoactive Drugs 2017, 49: 326-332. PMID: 28661714, PMCID: PMC6218246, DOI: 10.1080/02791072.2017.1342152.
Emergency Department-Initiated Buprenorphine for Opioid Dependence with Continuation in Primary Care: Outcomes During and After InterventionD’Onofrio G, Chawarski MC, O’Connor P, Pantalon MV, Busch SH, Owens PH, Hawk K, Bernstein SL, Fiellin DA. Emergency Department-Initiated Buprenorphine for Opioid Dependence with Continuation in Primary Care: Outcomes During and After Intervention. Journal Of General Internal Medicine 2017, 32: 660-666. PMID: 28194688, PMCID: PMC5442013, DOI: 10.1007/s11606-017-3993-2.
Psychiatric symptoms, quality of life, and HIV status among people using opioids in Saint Petersburg, RussiaDesrosiers A, Blokhina E, Krupitsky E, Zvartau E, Schottenfeld R, Chawarski M. Psychiatric symptoms, quality of life, and HIV status among people using opioids in Saint Petersburg, Russia. Drug And Alcohol Dependence 2017, 172: 60-65. PMID: 28130990, PMCID: PMC5408353, DOI: 10.1016/j.drugalcdep.2016.12.007.
Emerging Drug Use Trends in Kelantan, MalaysiaDesrosiers A, Chooi WT, Zaharim NM, Ahmad I, Yasin M, Jaapar S, Schottenfeld RS, Vicknasingam B, Chawarski MC. Emerging Drug Use Trends in Kelantan, Malaysia. Journal Of Psychoactive Drugs 2016, 48: 218-226. PMID: 27224011, DOI: 10.1080/02791072.2016.1185553.
Medical treatments for opioid use disorder in Iran: a randomized, double‐blind placebo‐controlled comparison of buprenorphine/naloxone and naltrexone maintenance treatmentMokri A, Chawarski MC, Taherinakhost H, Schottenfeld RS. Medical treatments for opioid use disorder in Iran: a randomized, double‐blind placebo‐controlled comparison of buprenorphine/naloxone and naltrexone maintenance treatment. Addiction 2016, 111: 874-882. PMID: 26639678, DOI: 10.1111/add.13259.
Teaching Psychosocial Interventions for Opioid Use Disorder in Low and Middle Income Countries: Malaysia and ChinaMarienfeld C, Chawarski M. Teaching Psychosocial Interventions for Opioid Use Disorder in Low and Middle Income Countries: Malaysia and China. Academic Psychiatry 2015, 40: 507-513. PMID: 26626791, DOI: 10.1007/s40596-015-0438-2.
Aripiprazole and Risperidone for Treatment of Methamphetamine-Associated Psychosis in Chinese PatientsWang G, Zhang Y, Zhang S, Chen H, Xu Z, Schottenfeld RS, Hao W, Chawarski MC. Aripiprazole and Risperidone for Treatment of Methamphetamine-Associated Psychosis in Chinese Patients. Journal Of Substance Abuse Treatment 2015, 62: 84-88. PMID: 26733277, PMCID: PMC4724444, DOI: 10.1016/j.jsat.2015.11.009.
Pilot study of atomoxetine for BUP/NX-maintained patients with co-occurring opioid and ATS use disorderSchottenfeld R, Chawarski M, Sofuoglu M, Chooi W, Zaharim N, Yasin M, Ahmad I, Jaapar S, Kasinather V. Pilot study of atomoxetine for BUP/NX-maintained patients with co-occurring opioid and ATS use disorder. Drug And Alcohol Dependence 2015, 156: e200. DOI: 10.1016/j.drugalcdep.2015.07.538.
Aripiprazole and risperidone in treatment of methamphetamine associated psychosis in China: A pilot randomized studyWang G, Zhang Y, Zhang S, Chen H, Xu Z, Hao W, Chawarski M. Aripiprazole and risperidone in treatment of methamphetamine associated psychosis in China: A pilot randomized study. Drug And Alcohol Dependence 2015, 156: e234. DOI: 10.1016/j.drugalcdep.2015.07.631.
A randomized clinical trial of emergency department initiated treatment for opioid dependence: Two and six month outcomesD’Onofrio G, O’Connor P, Pantalon M, Chawarski M, Busch S, Owens P, Bernstein S, Fiellin D. A randomized clinical trial of emergency department initiated treatment for opioid dependence: Two and six month outcomes. Drug And Alcohol Dependence 2015, 156: e53. DOI: 10.1016/j.drugalcdep.2015.07.1062.
Health service use in a randomized clinical trial comparing three methods of emergency department interventions for opioid dependenceBusch S, Hawk K, Fiellin D, O’Connor P, Chawarski M, Owens P, Pantalon M, Bernstein S, D’Onofrio G. Health service use in a randomized clinical trial comparing three methods of emergency department interventions for opioid dependence. Drug And Alcohol Dependence 2015, 156: e32. DOI: 10.1016/j.drugalcdep.2015.07.1005.
Evaluation of cognitive functioning of individuals with co-occurring opiate and amphetamine-type stimulants use disorders in MalaysiaChooi W, Zaharim N, Desrosiers A, Ahmad I, Yasin M, Jaapar S, Schottenfeld R, Kasinather V, Chawarski M. Evaluation of cognitive functioning of individuals with co-occurring opiate and amphetamine-type stimulants use disorders in Malaysia. Drug And Alcohol Dependence 2015, 156: e43-e44. DOI: 10.1016/j.drugalcdep.2015.07.1036.
Evaluation of an implementation of methadone maintenance treatment in ChinaMarienfeld C, Liu P, Wang X, Schottenfeld R, Zhou W, Chawarski MC. Evaluation of an implementation of methadone maintenance treatment in China. Drug And Alcohol Dependence 2015, 157: 60-67. PMID: 26601934, PMCID: PMC4663107, DOI: 10.1016/j.drugalcdep.2015.10.001.
Emergency Department–Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical TrialD’Onofrio G, O’Connor P, Pantalon MV, Chawarski MC, Busch SH, Owens PH, Bernstein SL, Fiellin DA. Emergency Department–Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical Trial. JAMA 2015, 313: 1636-1644. PMID: 25919527, PMCID: PMC4527523, DOI: 10.1001/jama.2015.3474.
Buprenorphine/naloxone treatment practices in Malaysia: Results of national surveys of physicians and patientsVicknasingam B, Dazali MN, Singh D, Schottenfeld RS, Chawarski MC. Buprenorphine/naloxone treatment practices in Malaysia: Results of national surveys of physicians and patients. Drug And Alcohol Dependence 2015, 152: 164-169. PMID: 25935736, DOI: 10.1016/j.drugalcdep.2015.04.007.
Expanding Substance Use Treatment Options for HIV Prevention With Buprenorphine–NaloxoneMetzger DS, Donnell D, Celentano DD, Jackson JB, Shao Y, Aramrattana A, Wei L, Fu L, Ma J, Lucas GM, Chawarski M, Ruan Y, Richardson P, Shin K, Chen RY, Sugarman J, Dye BJ, Rose SM, Beauchamp G, Burns DN. Expanding Substance Use Treatment Options for HIV Prevention With Buprenorphine–Naloxone. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2015, 68: 554-561. PMID: 25564105, PMCID: PMC4382671, DOI: 10.1097/qai.0000000000000510.
Profiles of psychiatric disorders among heroin dependent individuals in Changsha, ChinaYang M, Liao Y, Wang Q, Chawarski MC, Hao W. Profiles of psychiatric disorders among heroin dependent individuals in Changsha, China. Drug And Alcohol Dependence 2015, 149: 272-279. PMID: 25680517, PMCID: PMC4609506, DOI: 10.1016/j.drugalcdep.2015.01.028.
Hepatitis C seroconversion in methadone maintenance treatment programs in Wuhan, ChinaZhou W, Wang X, Zhou S, Xie N, Liu P, Luo L, Peng J, Liu M, Desrosiers A, Schottenfeld R, Chawarski MC. Hepatitis C seroconversion in methadone maintenance treatment programs in Wuhan, China. Addiction 2015, 110: 796-802. PMID: 25529103, PMCID: PMC4598328, DOI: 10.1111/add.12836.
Implementation of drug and HIV risk counseling in MMT programs in TaiwanLee T, Chawarski M, Peng C, Hung C, Metzger D. Implementation of drug and HIV risk counseling in MMT programs in Taiwan. Drug And Alcohol Dependence 2015, 146: e173. DOI: 10.1016/j.drugalcdep.2014.09.387.
Gender differences in psychiatric symptoms among opiate-dependent patients in RussiaDesrosiers A, Blokhina E, Krupitsky E, Chawarski M. Gender differences in psychiatric symptoms among opiate-dependent patients in Russia. Drug And Alcohol Dependence 2015, 146: e264. DOI: 10.1016/j.drugalcdep.2014.09.184.
Knowledge, perception and risk behaviors for HIV transmission among methadone clients in Shanghai, ChinaZhang H, Chawarski M, Schottenfeld R. Knowledge, perception and risk behaviors for HIV transmission among methadone clients in Shanghai, China. Drug And Alcohol Dependence 2014, 140: e249. DOI: 10.1016/j.drugalcdep.2014.02.688.
Clinical supervision of drug counselors in Wuhan, ChinaSong R, Zhou W, Schottenfeld R, Chawarski M. Clinical supervision of drug counselors in Wuhan, China. Drug And Alcohol Dependence 2014, 140: e213. DOI: 10.1016/j.drugalcdep.2014.02.593.
Evaluating a rapidly expanding methadone system in ChinaMarienfeld C, Liu P, Zhou W, Wang X, Luo L, Schottenfeld R, Chawarski M. Evaluating a rapidly expanding methadone system in China. Drug And Alcohol Dependence 2014, 140: e133-e134. DOI: 10.1016/j.drugalcdep.2014.02.380.
Expansion of medically assisted treatment (MAT) programs in MalaysiaKasinather V, Mazlan M, Schottenfeld R, Chawarski M. Expansion of medically assisted treatment (MAT) programs in Malaysia. Drug And Alcohol Dependence 2014, 140: e99-e100. DOI: 10.1016/j.drugalcdep.2014.02.288.
Genotype diversity of HCV among MMT patients in Wuhan, ChinaZhou S, Zhou W, Schottenfeld R, Kong W, Liu M, Peng J, Liu P, Chawarski M. Genotype diversity of HCV among MMT patients in Wuhan, China. Drug And Alcohol Dependence 2014, 140: e250. DOI: 10.1016/j.drugalcdep.2014.02.691.
RCT of drug counseling and abstinence contingent buprenorphine in MalaysiaSchottenfeld R, Chawarski M, Mazlan M. RCT of drug counseling and abstinence contingent buprenorphine in Malaysia. Drug And Alcohol Dependence 2014, 140: e199. DOI: 10.1016/j.drugalcdep.2014.02.555.
Clinical supervision of drug counselors in MaldivesChawarski M, Malik A, Hussain L. Clinical supervision of drug counselors in Maldives. Drug And Alcohol Dependence 2014, 140: e31-e32. DOI: 10.1016/j.drugalcdep.2014.02.107.
Profiles of psychiatric symptoms among amphetamine type stimulant and ketamine using inpatients in Wuhan, ChinaZhang Y, Xu Z, Zhang S, Desrosiers A, Schottenfeld RS, Chawarski MC. Profiles of psychiatric symptoms among amphetamine type stimulant and ketamine using inpatients in Wuhan, China. Journal Of Psychiatric Research 2014, 53: 99-102. PMID: 24613031, PMCID: PMC4004368, DOI: 10.1016/j.jpsychires.2014.02.010.
Randomized clinical trial of disulfiram for cocaine dependence or abuse during buprenorphine treatmentSchottenfeld RS, Chawarski MC, Cubells JF, George TP, Lappalainen J, Kosten TR. Randomized clinical trial of disulfiram for cocaine dependence or abuse during buprenorphine treatment. Drug And Alcohol Dependence 2013, 136: 36-42. PMID: 24462581, DOI: 10.1016/j.drugalcdep.2013.12.007.
Substance abuse and the HIV situation in MalaysiaSingh D, Chawarski MC, Schottenfeld R, Vicknasingam B. Substance abuse and the HIV situation in Malaysia. Journal Of Food And Drug Analysis 2013, 21: s46-s51. PMID: 25278737, PMCID: PMC4179250, DOI: 10.1016/j.jfda.2013.09.033.
Impulsivity, cognitive function, and their relationship in heroin-dependent individualsZeng H, Lee TM, Waters JH, So KF, Sham PC, Schottenfeld RS, Marienfeld C, Chawarski MC. Impulsivity, cognitive function, and their relationship in heroin-dependent individuals. Journal Of Clinical And Experimental Neuropsychology 2013, 35: 897-905. PMID: 24040894, DOI: 10.1080/13803395.2013.828022.
Treatment for Drug Dependence in Asia.Chawarski, M., Schottenfeld, R., Vicknasingam, B. (2013). Treatment for Drug Dependence in Asia. In: F. Rahman and N. Croft (Eds.) Drug Law Reform in East and Southeast Asia. Lexington Books, Plymouth, UK.
Cost-Effectiveness of Buprenorphine and Naltrexone Treatments for Heroin Dependence in MalaysiaRuger JP, Chawarski M, Mazlan M, Ng N, Schottenfeld R. Cost-Effectiveness of Buprenorphine and Naltrexone Treatments for Heroin Dependence in Malaysia. PLOS ONE 2012, 7: e50673. PMID: 23226534, PMCID: PMC3514172, DOI: 10.1371/journal.pone.0050673.
Psychiatrist Decision-Making Towards Prescribing Benzodiazepines: The Dilemma with Substance AbusersMarienfeld CB, Tek E, Diaz E, Schottenfeld R, Chawarski M. Psychiatrist Decision-Making Towards Prescribing Benzodiazepines: The Dilemma with Substance Abusers. Psychiatric Quarterly 2012, 83: 521-529. PMID: 22528141, DOI: 10.1007/s11126-012-9220-8.
A Brief Intervention Reduces Hazardous and Harmful Drinking in Emergency Department PatientsD'Onofrio G, Fiellin DA, Pantalon MV, Chawarski MC, Owens PH, Degutis LC, Busch SH, Bernstein SL, O'Connor PG. A Brief Intervention Reduces Hazardous and Harmful Drinking in Emergency Department Patients. Annals Of Emergency Medicine 2012, 60: 181-192. PMID: 22459448, PMCID: PMC3811141, DOI: 10.1016/j.annemergmed.2012.02.006.
Drug use in rural China: a preliminary investigation in Hunan ProvinceDeng Q, Tang Q, Schottenfeld RS, Hao W, Chawarski MC. Drug use in rural China: a preliminary investigation in Hunan Province. Addiction 2012, 107: 610-613. PMID: 21906200, PMCID: PMC4596718, DOI: 10.1111/j.1360-0443.2011.03648.x.
Lifetime ATS use and increased HIV risk among not-in-treatment opiate injectors in MalaysiaChawarski MC, Vicknasingam B, Mazlan M, Schottenfeld RS. Lifetime ATS use and increased HIV risk among not-in-treatment opiate injectors in Malaysia. Drug And Alcohol Dependence 2012, 124: 177-180. PMID: 22266088, PMCID: PMC4641448, DOI: 10.1016/j.drugalcdep.2011.12.024.
Costs of Addressing Heroin Addiction in Malaysia and 32 Comparable Countries WorldwideRuger JP, Chawarski M, Mazlan M, Luekens C, Ng N, Schottenfeld R. Costs of Addressing Heroin Addiction in Malaysia and 32 Comparable Countries Worldwide. Health Services Research 2011, 47: 865-887. PMID: 22091732, PMCID: PMC3419893, DOI: 10.1111/j.1475-6773.2011.01335.x.
Behavioral drug and HIV risk reduction counseling (BDRC) in MMT programs in Wuhan, China: A pilot randomized clinical trialChawarski MC, Zhou W, Schottenfeld RS. Behavioral drug and HIV risk reduction counseling (BDRC) in MMT programs in Wuhan, China: A pilot randomized clinical trial. Drug And Alcohol Dependence 2010, 115: 237-239. PMID: 21159452, PMCID: PMC3076517, DOI: 10.1016/j.drugalcdep.2010.09.024.
Injection of buprenorphine and buprenorphine/naloxone tablets in MalaysiaVicknasingam B, Mazlan M, Schottenfeld RS, Chawarski MC. Injection of buprenorphine and buprenorphine/naloxone tablets in Malaysia. Drug And Alcohol Dependence 2010, 111: 44-49. PMID: 20478668, DOI: 10.1016/j.drugalcdep.2010.03.014.
The Association between Cocaine Use and Treatment Outcomes in Patients Receiving Office‐Based Buprenorphine/Naloxone for the Treatment of Opioid DependenceSullivan LE, Moore BA, O'Connor PG, Barry DT, Chawarski MC, Schottenfeld RS, Fiellin DA. The Association between Cocaine Use and Treatment Outcomes in Patients Receiving Office‐Based Buprenorphine/Naloxone for the Treatment of Opioid Dependence. American Journal On Addictions 2009, 19: 53-58. PMID: 20132122, PMCID: PMC3107713, DOI: 10.1111/j.1521-0391.2009.00003.x.
Opiate agonist treatment for addiction – Authors' replySchottenfeld R, Chawarski M, Mazlan M. Opiate agonist treatment for addiction – Authors' reply. The Lancet 2008, 372: 1952. DOI: 10.1016/s0140-6736(08)61839-5.
Doubts about the role of cannabis in causing lung cancerSewell RA, Cohn AJ, Chawarski MC. Doubts about the role of cannabis in causing lung cancer. European Respiratory Journal 2008, 32: 815-816. PMID: 18757709, DOI: 10.1183/09031936.00051108.
Maintenance treatment with buprenorphine and naltrexone for heroin dependence in Malaysia: a randomised, double-blind, placebo-controlled trialSchottenfeld RS, Chawarski MC, Mazlan M. Maintenance treatment with buprenorphine and naltrexone for heroin dependence in Malaysia: a randomised, double-blind, placebo-controlled trial. The Lancet 2008, 371: 2192-2200. PMID: 18586174, PMCID: PMC4041792, DOI: 10.1016/s0140-6736(08)60954-x.
Brief Intervention for Hazardous and Harmful Drinkers in the Emergency DepartmentD'Onofrio G, Pantalon MV, Degutis LC, Fiellin DA, Busch SH, Chawarski MC, Owens PH, O'Connor PG. Brief Intervention for Hazardous and Harmful Drinkers in the Emergency Department. Annals Of Emergency Medicine 2008, 51: 742-750.e2. PMID: 18436340, PMCID: PMC2819119, DOI: 10.1016/j.annemergmed.2007.11.028.
Major depression and recent physical or sexual abuse increase readmissions among high-utilising primary care patients.Levine JM, Brown KE, Chawarski M, Fiellin DA, White WD, Sledge WH. Major depression and recent physical or sexual abuse increase readmissions among high-utilising primary care patients. Mental Health In Family Medicine 2008, 5: 23-8. PMID: 22477843, PMCID: PMC2777549.
Long‐Term Treatment with Buprenorphine/Naloxone in Primary Care: Results at 2–5 YearsFiellin DA, Moore BA, Sullivan LE, Becker WC, Pantalon MV, Chawarski MC, Barry DT, O'Connor PG, Schottenfeld RS. Long‐Term Treatment with Buprenorphine/Naloxone in Primary Care: Results at 2–5 Years. American Journal On Addictions 2008, 17: 116-120. PMID: 18393054, DOI: 10.1080/10550490701860971.
Research‐ and Community‐Based Clinicians' Attitudes on Treatment ManualsBarry DT, Fulgieri MD, Lavery ME, Chawarski MC, Najavits LM, Schottenfeld RS, Pantalon MV. Research‐ and Community‐Based Clinicians' Attitudes on Treatment Manuals. American Journal On Addictions 2008, 17: 145-148. PMID: 18393058, DOI: 10.1080/10550490701860880.
Behavioral drug and HIV risk reduction counseling (BDRC) with abstinence-contingent take-home buprenorphine: A pilot randomized clinical trialChawarski MC, Mazlan M, Schottenfeld RS. Behavioral drug and HIV risk reduction counseling (BDRC) with abstinence-contingent take-home buprenorphine: A pilot randomized clinical trial. Drug And Alcohol Dependence 2007, 94: 281-284. PMID: 18164145, DOI: 10.1016/j.drugalcdep.2007.11.008.
Buprenorphine/naloxone treatment in primary care is associated with decreased human immunodeficiency virus risk behaviorsSullivan LE, Moore BA, Chawarski MC, Pantalon MV, Barry D, O'Connor PG, Schottenfeld RS, Fiellin DA. Buprenorphine/naloxone treatment in primary care is associated with decreased human immunodeficiency virus risk behaviors. Journal Of Substance Abuse Treatment 2007, 35: 87-92. PMID: 17933486, PMCID: PMC2587397, DOI: 10.1016/j.jsat.2007.08.004.
Utility of sweat patch testing for drug use monitoring in outpatient treatment for opiate dependenceChawarski MC, Fiellin DA, O'Connor PG, Bernard M, Schottenfeld RS. Utility of sweat patch testing for drug use monitoring in outpatient treatment for opiate dependence. Journal Of Substance Abuse Treatment 2007, 33: 411-415. PMID: 17512157, PMCID: PMC3632440, DOI: 10.1016/j.jsat.2007.03.004.
Primary Care Office-based Buprenorphine Treatment: Comparison of Heroin and Prescription Opioid Dependent PatientsMoore BA, Fiellin DA, Barry DT, Sullivan LE, Chawarski MC, O’Connor P, Schottenfeld RS. Primary Care Office-based Buprenorphine Treatment: Comparison of Heroin and Prescription Opioid Dependent Patients. Journal Of General Internal Medicine 2007, 22: 527-530. PMID: 17372805, PMCID: PMC1829433, DOI: 10.1007/s11606-007-0129-0.
Patient Satisfaction with Primary Care Office-Based Buprenorphine/Naloxone TreatmentBarry DT, Moore BA, Pantalon MV, Chawarski MC, Sullivan LE, O’Connor P, Schottenfeld RS, Fiellin DA. Patient Satisfaction with Primary Care Office-Based Buprenorphine/Naloxone Treatment. Journal Of General Internal Medicine 2007, 22: 242-245. PMID: 17356993, PMCID: PMC1824745, DOI: 10.1007/s11606-006-0050-y.
A Trial of Integrated Buprenorphine/Naloxone and HIV Clinical CareSullivan LE, Barry D, Moore BA, Chawarski MC, Tetrault JM, Pantalon MV, O'Connor PG, Schottenfeld RS, Fiellin DA. A Trial of Integrated Buprenorphine/Naloxone and HIV Clinical Care. Clinical Infectious Diseases 2006, 43: s184-s190. PMID: 17109305, DOI: 10.1086/508182.
A Randomized Trial of Primary Intensive Care to Reduce Hospital Admissions in Patients with High Utilization of Inpatient ServicesSledge WH, Brown KE, Levine JM, Fiellin DA, Chawarski M, White WD, O'Connor PG. A Randomized Trial of Primary Intensive Care to Reduce Hospital Admissions in Patients with High Utilization of Inpatient Services. Population Health Management 2006, 9: 328-338. PMID: 17115880, DOI: 10.1089/dis.2006.9.328.
ASIA PACIFIC COLUMN: New challenges and opportunities in managing substance abuse in MalaysiaMAZLAN M, SCHOTTENFELD RS, CHAWARSKI MC. ASIA PACIFIC COLUMN: New challenges and opportunities in managing substance abuse in Malaysia. Drug And Alcohol Review 2006, 25: 473-478. PMID: 16939945, DOI: 10.1080/09595230600883354.
Counseling plus Buprenorphine–Naloxone Maintenance Therapy for Opioid DependenceFiellin DA, Pantalon MV, Chawarski MC, Moore BA, Sullivan LE, O'Connor PG, Schottenfeld RS. Counseling plus Buprenorphine–Naloxone Maintenance Therapy for Opioid Dependence. New England Journal Of Medicine 2006, 355: 365-374. PMID: 16870915, DOI: 10.1056/nejmoa055255.
Heroin dependence and HIV infection in MalaysiaChawarski MC, Mazlan M, Schottenfeld RS. Heroin dependence and HIV infection in Malaysia. Drug And Alcohol Dependence 2006, 82: s39-s42. PMID: 16769444, DOI: 10.1016/s0376-8716(06)80007-4.
Coronary stenting is safe and effective in a high-risk octogenarian patient cohort.Baklanov DV, Marcu CB, Juhasz DF, Caracciolo EA, Chawarski MC, Donohue TJ. Coronary stenting is safe and effective in a high-risk octogenarian patient cohort. Connecticut Medicine 2006, 70: 15-9. PMID: 16479871.
Buprenorphine tablet versus liquid: A clinical trial comparing plasma levels, efficacy, and symptomsChawarski MC, Moody DE, Pakes J, O'Connor PG, Schottenfeld RS. Buprenorphine tablet versus liquid: A clinical trial comparing plasma levels, efficacy, and symptoms. Journal Of Substance Abuse Treatment 2005, 29: 307-312. PMID: 16311183, DOI: 10.1016/j.jsat.2005.08.011.
The practice of office-based buprenorphine treatment of opioid dependence: is it associated with new patients entering into treatment?Sullivan LE, Chawarski M, O’Connor P, Schottenfeld RS, Fiellin DA. The practice of office-based buprenorphine treatment of opioid dependence: is it associated with new patients entering into treatment? Drug And Alcohol Dependence 2005, 79: 113-116. PMID: 15943950, DOI: 10.1016/j.drugalcdep.2004.12.008.
Methadone Versus Buprenorphine With Contingency Management or Performance Feedback for Cocaine and Opioid DependenceSchottenfeld RS, Chawarski MC, Pakes JR, Pantalon MV, Carroll KM, Kosten TR. Methadone Versus Buprenorphine With Contingency Management or Performance Feedback for Cocaine and Opioid Dependence. American Journal Of Psychiatry 2005, 162: 340-349. PMID: 15677600, DOI: 10.1176/appi.ajp.162.2.340.
Context‐Constrained Judgment of the Perceived Risk of HIV/AIDS1Baird J, Chawarski M. Context‐Constrained Judgment of the Perceived Risk of HIV/AIDS1. Journal Of Applied Social Psychology 2005, 35: 29-60. DOI: 10.1111/j.1559-1816.2005.tb02092.x.
Counseling Requirements for Buprenorphine Maintenance in Primary CarePantalon M, Fiellin D, O’Connor P, Chawarski M, Pakes J, Schottenfeld R. Counseling Requirements for Buprenorphine Maintenance in Primary Care. Addictive Disorders & Their Treatment 2004, 3: 71-76. DOI: 10.1097/00132576-200406000-00003.
Voucher Purchases in Contingency Management Interventions for Women with Cocaine DependencePantalon M, Ferro G, Chawarski M, LaPaglia D, Pakes J, Schottenfeld R. Voucher Purchases in Contingency Management Interventions for Women with Cocaine Dependence. Addictive Disorders & Their Treatment 2004, 3: 27-35. DOI: 10.1097/00132576-200403000-00004.
Processes of Care During a Randomized Trial of Office‐based Treatment of Opioid Dependence in Primary CareFiellin DA, O'Connor PG, Chawarski M, Schottenfeld RS. Processes of Care During a Randomized Trial of Office‐based Treatment of Opioid Dependence in Primary Care. American Journal On Addictions 2004, 13: s67-s78. PMID: 15204676, DOI: 10.1080/10550490490440843.
Linking Process and Outcome in the Community Reinforcement Approach for Treating Cocaine Dependence: A Preliminary ReportPantalon MV, Chawarski MC, Falcioni J, Pakes J, Schottenfeld RS. Linking Process and Outcome in the Community Reinforcement Approach for Treating Cocaine Dependence: A Preliminary Report. The American Journal Of Drug And Alcohol Abuse 2004, 30: 353-367. PMID: 15230080, DOI: 10.1081/ada-120037382.
Cluster Analysis Classification of SF-36 Profiles for Patients With Spinal PainFanciullo GJ, Hanscom B, Weinstein JN, Chawarski MC, Jamison RN, Baird JC. Cluster Analysis Classification of SF-36 Profiles for Patients With Spinal Pain. Spine 2003, 28: 2276-2282. PMID: 14520044, DOI: 10.1097/01.brs.0000084880.33281.eb.
Reliability and Validity of an Interactive Computer Method for Rating Quality of LifeFanciullo GJ, Jamison RN, Chawarski MC, Baird JC. Reliability and Validity of an Interactive Computer Method for Rating Quality of Life. Pain Medicine 2003, 4: 257-268. PMID: 12974825, DOI: 10.1046/j.1526-4637.2003.03025.x.
Treatment of heroin dependence with buprenorphine in primary careFiellin DA, Pantalon MV, Pakes JP, O'Connor PG, Chawarski M, Schottenfeld RS. Treatment of heroin dependence with buprenorphine in primary care. The American Journal Of Drug And Alcohol Abuse 2002, 28: 231-241. PMID: 12014814, DOI: 10.1081/ada-120002972.
Interactive Computer Method for Rating Quality of Life: Comparison of Chronic Pain Patients and Healthy ControlsFaniciullo G, Jamison R, Chawarski M, Baird J. Interactive Computer Method for Rating Quality of Life: Comparison of Chronic Pain Patients and Healthy Controls. Pain Medicine 2001, 2: 298-308. PMID: 15102234, DOI: 10.1046/j.1526-4637.2001.01053.x.
Methadone Maintenance in Primary Care: A Randomized Controlled TrialFiellin DA, O'Connor PG, Chawarski M, Pakes JP, Pantalon MV, Schottenfeld RS. Methadone Maintenance in Primary Care: A Randomized Controlled Trial. JAMA 2001, 286: 1724-1731. PMID: 11594897, DOI: 10.1001/jama.286.14.1724.
Disulfiram versus placebo for cocaine dependence in buprenorphine-maintained subjects: a preliminary trialGeorge T, Chawarski M, Pakes J, Carroll K, Kosten T, Schottenfeld R. Disulfiram versus placebo for cocaine dependence in buprenorphine-maintained subjects: a preliminary trial. Biological Psychiatry 2000, 47: 1080-1086. PMID: 10862808, DOI: 10.1016/s0006-3223(99)00310-8.
Thrice-weekly versus daily buprenorphine maintenanceSchottenfeld R, Pakes J, O’Connor P, Chawarski M, Oliveto A, Kosten T. Thrice-weekly versus daily buprenorphine maintenance. Biological Psychiatry 2000, 47: 1072-1079. PMID: 10862807, DOI: 10.1016/s0006-3223(99)00270-x.
Community reinforcement approach for combined opioid and cocaine dependence Patterns of engagement in alternate activitiesSchottenfeld R, Pantalon M, Chawarski M, Pakes J, M.Ed. Community reinforcement approach for combined opioid and cocaine dependence Patterns of engagement in alternate activities. Journal Of Substance Abuse Treatment 2000, 18: 255-261. PMID: 10742639, DOI: 10.1016/s0740-5472(99)00062-8.
Plasma concentrations of buprenorphine 24 to 72 hours after dosingChawarski MC, Schottenfeld RS, O’Connor P, Pakes J. Plasma concentrations of buprenorphine 24 to 72 hours after dosing. Drug And Alcohol Dependence 1999, 55: 157-163. PMID: 10402160, DOI: 10.1016/s0376-8716(98)00192-6.
Assessment of HIV RiskChawarski M, Pakes J, Schottenfeld R. Assessment of HIV Risk. Journal Of Addictive Diseases 1998, 17: 49-59. PMID: 9848031, DOI: 10.1300/j069v17n04_05.
If You Changed Your Name and Appearance to Those of Elvis Presley, Who Would You Be? Historical Features in CategorizationSternberg R, Chawarski M, Allbritton D. If You Changed Your Name and Appearance to Those of Elvis Presley, Who Would You Be? Historical Features in Categorization. The American Journal Of Psychology 1998, 111: 327. DOI: 10.2307/1423445.
Negative Priming in Word Recognition: A Context EffectChawarski M, Sternberg R. Negative Priming in Word Recognition: A Context Effect. Journal Of Experimental Psychology General 1993, 122: 195-206. PMID: 8315400, DOI: 10.1037/0096-3445.122.2.195.
INTELLECTUAL ABILITIES AND DEALING WITH UNEXPECTED CHANGES IN TASK REQUIREMENTSChawarski M. INTELLECTUAL ABILITIES AND DEALING WITH UNEXPECTED CHANGES IN TASK REQUIREMENTS. High Ability Studies 1991, 1: 25-32. DOI: 10.1080/0937445900010104.

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Conditions	Study Title
Addictive Behaviors	Clinical Determinants of Unintended Prolonged Opioid Use

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Marek Chawarski, PhD

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