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Heather Allore, PhD

Professor of Medicine (Geriatrics) and of Biostatistics; Leader, Data Management and Statistics Core, Yale Alzheimer's Disease Research Center, Internal Medicine; Co-director of the Biostatistics and Bioinformatics Core of the Yale Transdisciplinary Collaborative Center for Precision Medicine focused on Health Disparities, Yale Transdisciplinary Collaborative Center for Precision Medicine ; Associate Director of Gerontologic Biostatistical Methods, Internal Medicine: Geriatrics; Senior Biostatistician and Epidemiologist, Internal Medicine: Rheumatology; Co-Director of Biostatistical Core, Internal Medicine: Geriatrics

Research Summary

Dr. Allore's research is focused on issues related to the design and analysis of studies of multi-component interventions and the design and analysis of observational studies of multifactorial geriatric health conditions. Other areas of her applied research include developing strategies for handling missing data that frequently occurs in studies of older persons, applying extended Cox models for state transitions in geriatrics, such as frailty and disability that consist of multiple discrete states in which both onset and recovery are possible, and determining the mechanisms of action of an effective multi-component intervention. She has collaborated on several projects in immunology and is introducing new analytic methods to account for correlations among elements of the innate immune system. She developed a subdiscipline of biostatistics within the American Statistical Association that focuses on training and methodological development in Aging Research called "Gerontologic Biostatistics." This discipline trains biostatisticians for conducting collaborative clinical research with geriatricians and gerontologists in elderly populations and provide the basis for the development new statistical methodology. She served on the NIH Aging Systems and Geriatrics study section, VA Human Rights Committee, and CDC Special Emphasis study section. She has served as a reviewer and editorial board member for a variety of medical journals.

Specialized Terms: State transition models; Experimental design; Longitudinal methods; Missing data Methods; Marginal structural models; Latent class models; Trajectory models; Dynamic stochastic models; Joint models

Extensive Research Description

Dr. Allore's current research includes analytic methods for Alzheimer's and related dementias, polypharmacy, functional and mobility disability in the older adults, differences in immune system function of between young and older persons, and multiple comorbid conditions.

She is also developing a subdiscipline of biostatistics within the American Statistical Association that focuses on training and methodological development in geriatrics called “gerontologic biostatistics.” This discipline trains biostatisticians for conducting collaborative clinical research with geriatricians and gerontologists in elderly populations and provide the basis for the development new statistical methodology.

Coauthors

Research Interests

Aging; Geriatrics; Statistics as Topic; Frail Elderly; Mathematical Concepts; Biostatistics

Public Health Interests

Aging; Epidemiology Methods

Selected Publications

  • Featured CoverKonstorum A, Mohanty S, Zhao Y, Melillo A, Vander Wyk B, Nelson A, Tsang S, Blevins T, Belshe R, Chawla D, Rondina M, Gill T, Montgomery R, Allore H, Kleinstein S, Shaw A. Featured Cover Aging Cell 2023, 22 PMCID: PMC9924937, DOI: 10.1111/acel.13801.
  • The association of electronic health literacy with behavioural and psychological coronary artery disease risk factors in patients after percutaneous coronary intervention: a 12-month follow-up studyBrørs G, Dalen H, Allore H, Deaton C, Fridlund B, Norman C, Palm P, Wentzel-Larsen T, Norekvål T. The association of electronic health literacy with behavioural and psychological coronary artery disease risk factors in patients after percutaneous coronary intervention: a 12-month follow-up study European Heart Journal - Digital Health 2023 DOI: 10.1093/ehjdh/ztad010.
  • Investigating a CD8+ T cell age‐associated gene signature in Alzheimer's diseaseYoung J, Park H, Par‐Young J, Bartlett H, Kim H, Shin M, You S, Kim M, Allore H, Mecca A, Kang I. Investigating a CD8+ T cell age‐associated gene signature in Alzheimer's disease Alzheimer's & Dementia 2022, 18 DOI: 10.1002/alz.064384.
  • SOCIAL SUPPORT AND STRAIN AS PREDICTORS OF MULTIMORBIDITY FOLLOWING A MARITAL TRANSITIONDenning E, Newsom J, Botoseneanu A, Allore H, Nagel C, Dorr D, Quiñones A. SOCIAL SUPPORT AND STRAIN AS PREDICTORS OF MULTIMORBIDITY FOLLOWING A MARITAL TRANSITION Innovation In Aging 2022, 6: 567-567. PMCID: PMC9770881, DOI: 10.1093/geroni/igac059.2136.
  • MENTAL-SOMATIC MULTIMORBIDITY IN GROUP-BASED TRAJECTORIES OF COGNITIVE FUNCTION FOR MIDDLE-AGED AND OLDER ADULTSChen S, Nagel C, Botoseneanu A, Allore H, Newsom J, Thielke S, Kaye J, Quiñones A. MENTAL-SOMATIC MULTIMORBIDITY IN GROUP-BASED TRAJECTORIES OF COGNITIVE FUNCTION FOR MIDDLE-AGED AND OLDER ADULTS Innovation In Aging 2022, 6: 610-610. PMCID: PMC9770737, DOI: 10.1093/geroni/igac059.2273.
  • MULTIMORBIDITY PROGRESSION AMONG MEDICARE BENEFICIARIES IN THE HEALTH AND RETIREMENT STUDY (1991–2015)Quiñones A, Markwardt S, Bobo M, Allore H, Newsom J, Nagel C, Botoseneanu A, Dorr D. MULTIMORBIDITY PROGRESSION AMONG MEDICARE BENEFICIARIES IN THE HEALTH AND RETIREMENT STUDY (1991–2015) Innovation In Aging 2022, 6: 693-693. DOI: 10.1093/geroni/igac059.2540.
  • RACIAL-ETHNIC VARIATION IN MULTIMORBIDITY PATTERNS AND HEALTHCARE SERVICES AMONG OLDEST-OLD PATIENTSCho J, Rahimighazikalayeh G, Allore H. RACIAL-ETHNIC VARIATION IN MULTIMORBIDITY PATTERNS AND HEALTHCARE SERVICES AMONG OLDEST-OLD PATIENTS Innovation In Aging 2022, 6: 795-795. PMCID: PMC9767161, DOI: 10.1093/geroni/igac059.2870.
  • 492. Dectin-1 Stimulation Promotes a Distinct Inflammatory Signature in the Setting of Aging and HIV-infectionZapata H, Kumar A, Wang J, Shaw A, Zhou H, Radcliffe C, Barakat L, Wyk B, Allore H, Zhao H, Tsang S, Manager D, Mohanty S. 492. Dectin-1 Stimulation Promotes a Distinct Inflammatory Signature in the Setting of Aging and HIV-infection Open Forum Infectious Diseases 2022, 9: ofac492.550. PMCID: PMC9751937, DOI: 10.1093/ofid/ofac492.550.
  • Phenotyping patient-reported health profiles in octogenarians with coronary artery disease – a latent profile analysisInstenes I, Breivik K, Allore H, Borregaard B, Deaton C, Larsen A, Wentzel-Larsen T, Norekval T. Phenotyping patient-reported health profiles in octogenarians with coronary artery disease – a latent profile analysis European Heart Journal 2022, 43 DOI: 10.1093/eurheartj/ehac544.2557.
  • Informing patients about potential adverse drug reactions after percutaneous coronary intervention reduces the occurrence of self-reported adverse drug reactionsPettersen T, Schjott J, Allore H, Bendz B, Borregaard B, Fridlund B, Hadjistavropoulos H, Larsen A, Nordrehaug J, Rasmussen T, Rotevatn S, Valaker I, Wentzel-Larsen T, Norekval T. Informing patients about potential adverse drug reactions after percutaneous coronary intervention reduces the occurrence of self-reported adverse drug reactions European Heart Journal 2022, 43 DOI: 10.1093/eurheartj/ehac544.2736.
  • Health literacy and physical and mental health status in octogenarian patients with coronary artery disease - a prospective cohort multicentre studyInstenes I, Brors G, Hjertvikrem N, Allore H, Borregaard B, Deaton C, Larsen A, Osborne R, Palm P, Thompson D, Norekval T. Health literacy and physical and mental health status in octogenarian patients with coronary artery disease - a prospective cohort multicentre study European Journal Of Cardiovascular Nursing 2022, 21 DOI: 10.1093/eurjcn/zvac060.054.
  • Differences in the Racial Contribution of Dementia and Chronic Conditions to Hospitalization, SNF AdmissionAllore H. Differences in the Racial Contribution of Dementia and Chronic Conditions to Hospitalization, SNF Admission Innovation In Aging 2021, 5: 274-274. PMCID: PMC8679558, DOI: 10.1093/geroni/igab046.1066.
  • Joint Trajectories of Multimorbidity, Function, Cognition, and Depression in the HRS (1998-2016)Nagel C, Allore H, Newsom J, Botoseneanu A, Dorr D, Thielke S, Kaye J, Quiñones A. Joint Trajectories of Multimorbidity, Function, Cognition, and Depression in the HRS (1998-2016) Innovation In Aging 2021, 5: 613-613. PMCID: PMC8680577, DOI: 10.1093/geroni/igab046.2345.
  • Multimorbidity Progression among Medicare Beneficiaries in the Health and Retirement Study (1992-2014)Quiñones A, Markwardt S, Allore H, Newsom J, Nagel C, Dorr D, Botoseneanu A. Multimorbidity Progression among Medicare Beneficiaries in the Health and Retirement Study (1992-2014) Innovation In Aging 2021, 5: 614-614. PMCID: PMC8681060, DOI: 10.1093/geroni/igab046.2347.
  • Multimorbidity Trajectory Classes as Predicted by Race, Ethnicity, and Social Relationship QualityNewsom J, O'Neill A, Denning E, Quiñones A, Botoseneanu A, Allore H, Nagel C, Dorr D. Multimorbidity Trajectory Classes as Predicted by Race, Ethnicity, and Social Relationship Quality Innovation In Aging 2021, 5: 866-866. PMCID: PMC8969686, DOI: 10.1093/geroni/igab046.3160.
  • Abstract 10547: Communication of Potential Adverse Drug Reactions in Patients Undergoing Percutaneous Coronary InterventionPettersen T, Allore H, Bendz B, Borregaard B, Fridlund B, Ghaderi S, Larsen A, Nordrehaug J, Rasmussen T, Rotevatn S, Schjøtt J, Valaker I, Norekvål T. Abstract 10547: Communication of Potential Adverse Drug Reactions in Patients Undergoing Percutaneous Coronary Intervention Circulation 2021, 144: a10547-a10547. DOI: 10.1161/circ.144.suppl_1.10547.
  • Perceptions of efficacy and safety of generic medicines in patients after percutaneous coronary interventionPettersen T, Schjott J, Allore H, Bendz B, Borregaard B, Fridlund B, Larsen A, Nordrehaug J, Rotevatn S, Wentzel-Larsen T, Norekvaal T. Perceptions of efficacy and safety of generic medicines in patients after percutaneous coronary intervention European Heart Journal 2021, 42 DOI: 10.1093/eurheartj/ehab724.3020.
  • Change in Cognitive Performance by Race or Ethnicity and Multimorbidity Among Older AmericansQuinones A, Chen S, Botoseneanu A, Allore H, Newsom J, Thielke S, Kaye J. Change in Cognitive Performance by Race or Ethnicity and Multimorbidity Among Older Americans Innovation In Aging 2020, 4: 329-329. PMCID: PMC7740553, DOI: 10.1093/geroni/igaa057.1054.
  • Racial or Ethnic and Multimorbidity Differences in Functional Limitation Trajectories Among Older AmericansQuinones A, Elman M, Botoseneanu A, Newsom J, Dorr D, Nagel C, Allore H. Racial or Ethnic and Multimorbidity Differences in Functional Limitation Trajectories Among Older Americans Innovation In Aging 2020, 4: 331-331. PMCID: PMC7740767, DOI: 10.1093/geroni/igaa057.1062.
  • Physical Activity as a Mediator in the Relationship Between Race or Ethnicity and Changes in MultimorbidityNewsom J, Denning E, Quinones A, Elman M, Botoseneanu A, Allore H, Nagel C, Dorr D. Physical Activity as a Mediator in the Relationship Between Race or Ethnicity and Changes in Multimorbidity Innovation In Aging 2020, 4: 342-342. PMCID: PMC7741674, DOI: 10.1093/geroni/igaa057.1098.
  • Multimorbidity Accumulation by Race or Ethnicity and Body-Weight Status Among Middle-Aged and Older AmericansBotoseneanu A, Markwardt S, Allore H, Nagel C, Newsom J, Dorr D, Quinones A. Multimorbidity Accumulation by Race or Ethnicity and Body-Weight Status Among Middle-Aged and Older Americans Innovation In Aging 2020, 4: 256-256. PMCID: PMC7741916, DOI: 10.1093/geroni/igaa057.822.
  • RACIAL-ETHNIC DIFFERENCES IN MULTIMORBIDITY PROGRESSION ACCORDING TO BODY-WEIGHT STATUS AMONG OLDER U.S. ADULTSBotoseneanu A, Markwardt S, Allore H, Nagel C, Newsom J, Dorr D, Quiñones A. RACIAL-ETHNIC DIFFERENCES IN MULTIMORBIDITY PROGRESSION ACCORDING TO BODY-WEIGHT STATUS AMONG OLDER U.S. ADULTS Innovation In Aging 2019, 3: s318-s319. PMCID: PMC6840919, DOI: 10.1093/geroni/igz038.1163.
  • TRACKING CHANGES IN MULTIMORBIDITY AMONG RACIALLY AND ETHNICALLY DIVERSE POPULATIONSQuiñones A, Botoseneanu A, Markwardt S, Nagel C, Newsom J, Dorr D, Allore H. TRACKING CHANGES IN MULTIMORBIDITY AMONG RACIALLY AND ETHNICALLY DIVERSE POPULATIONS Innovation In Aging 2019, 3: s354-s354. PMCID: PMC6840299, DOI: 10.1093/geroni/igz038.1285.
  • BURDEN OF POTENTIALLY INAPPROPRIATE MEDICATIONS AMONG OLDER VETERANS WITH PAIN AND DEMENTIAAllore H, Gnjidic D, Han L. BURDEN OF POTENTIALLY INAPPROPRIATE MEDICATIONS AMONG OLDER VETERANS WITH PAIN AND DEMENTIA Innovation In Aging 2019, 3: s717-s718. PMCID: PMC6845988, DOI: 10.1093/geroni/igz038.2632.
  • WORKSHOP PANEL REPORT ON EVIDENCE GAPS AND RESEARCH OPPORTUNITIESAllore H. WORKSHOP PANEL REPORT ON EVIDENCE GAPS AND RESEARCH OPPORTUNITIES Innovation In Aging 2019, 3: s749-s749. PMCID: PMC6845930, DOI: 10.1093/geroni/igz038.2746.
  • SOCIODEMOGRAPHIC AND HEALTH DISPARITIES IN USE OF PREVENTIVE HEALTHCARE SERVICESJoergensen T, Allore H, Nagel C, Quiñones A. SOCIODEMOGRAPHIC AND HEALTH DISPARITIES IN USE OF PREVENTIVE HEALTHCARE SERVICES Innovation In Aging 2019, 3: s873-s873. PMCID: PMC6845142, DOI: 10.1093/geroni/igz038.3201.
  • JOINT TRAJECTORIES OF COGNITION AND FRAILTY, AND ASSOCIATED BURDEN OF PATIENT-REPORTED OUTCOMESLiu Z, Han L, Gahbauer E, Allore H, Gill T. JOINT TRAJECTORIES OF COGNITION AND FRAILTY, AND ASSOCIATED BURDEN OF PATIENT-REPORTED OUTCOMES Innovation In Aging 2018, 2: 23-24. PMCID: PMC6226846, DOI: 10.1093/geroni/igy023.085.
  • LATENT CLASS ANALYSIS OF MULTIMORBIDITY COMPARING RACE/ETHNICITY GROUPSNewsom J, Quinones A, Botoseneanu A, Allore H, Nagel C, Dorr D. LATENT CLASS ANALYSIS OF MULTIMORBIDITY COMPARING RACE/ETHNICITY GROUPS Innovation In Aging 2018, 2: 497-498. PMCID: PMC6227597, DOI: 10.1093/geroni/igy023.1852.
  • INDIVIDUALISED ABSOLUTE RISK CALCULATOR FOR PERSONS WITH MULTIPLE CHRONIC CONDITIONSAllore H, McAvay G, Murphy T, Agogo G, Fragoso C. INDIVIDUALISED ABSOLUTE RISK CALCULATOR FOR PERSONS WITH MULTIPLE CHRONIC CONDITIONS Innovation In Aging 2017, 1: 739-739. PMCID: PMC6248692, DOI: 10.1093/geroni/igx004.2664.
  • STRIDE: EXPERIMENTAL AND STATISTICAL DESIGN CONSIDERATIONSTravison T, Miller M, Allore H, Dzuira J, Esserman D, Greene E. STRIDE: EXPERIMENTAL AND STATISTICAL DESIGN CONSIDERATIONS Innovation In Aging 2017, 1: 1007-1007. PMCID: PMC6185674, DOI: 10.1093/geroni/igx004.3656.
  • PARTICIPANT RANDOMIZATION IN COMPLEX TRIAL DESIGNSTravison T, Esserman D, Greene E, Allore H. PARTICIPANT RANDOMIZATION IN COMPLEX TRIAL DESIGNS Innovation In Aging 2017, 1: 658-658. PMCID: PMC6247269, DOI: 10.1093/geroni/igx004.2334.
  • ANALYSIS OF TRIALS WITH MULTI-LEVEL CLUSTERING, RECURRENT EVENTS AND COMPETING RISKSAllore H, Jung T, Esserman D, Peduzzi P. ANALYSIS OF TRIALS WITH MULTI-LEVEL CLUSTERING, RECURRENT EVENTS AND COMPETING RISKS Innovation In Aging 2017, 1: 658-658. PMCID: PMC6247167, DOI: 10.1093/geroni/igx004.2335.
  • HEART DISEASE, DIABETES AND DEMENTIA’S ASSOCIATION WITH FUNCTIONAL TRAJECTORIES OVER 5 YEARSVroomen J, Han L, Monin J, Allore H. HEART DISEASE, DIABETES AND DEMENTIA’S ASSOCIATION WITH FUNCTIONAL TRAJECTORIES OVER 5 YEARS Innovation In Aging 2017, 1: 598-599. PMCID: PMC6246203, DOI: 10.1093/geroni/igx004.2096.
  • CHRONIC CONDITIONS AND DISEASESRACIAL-ETHNIC DIFFERENCES IN MULTIMORBIDITY COMBINATIONS OVER TIMEQuinones A, Botoseneanu A, Markwardt S, Allore H. CHRONIC CONDITIONS AND DISEASESRACIAL-ETHNIC DIFFERENCES IN MULTIMORBIDITY COMBINATIONS OVER TIME Innovation In Aging 2017, 1: 318-319. PMCID: PMC6243829, DOI: 10.1093/geroni/igx004.1177.
  • INTERNATIONAL, PRAGMATIC, AND MULTISITE TRIALS: DESIGN, IMPLEMENTATION AND ETHICAL CONSIDERATIONSTravison T, Allore H, Tai-Seale M. INTERNATIONAL, PRAGMATIC, AND MULTISITE TRIALS: DESIGN, IMPLEMENTATION AND ETHICAL CONSIDERATIONS Innovation In Aging 2017, 1: 658-658. PMCID: PMC6247178, DOI: 10.1093/geroni/igx004.2332.
  • ASSOCIATIONS BETWEEN DEMENTIA STATUS AND POLYPHARMACY JOINTLY ACCOUNTING FOR DROPOUT AND DEATHAgogo G, Gnjidic D, Moga D, Allore H. ASSOCIATIONS BETWEEN DEMENTIA STATUS AND POLYPHARMACY JOINTLY ACCOUNTING FOR DROPOUT AND DEATH Innovation In Aging 2017, 1: 19-19. PMCID: PMC6241455, DOI: 10.1093/geroni/igx004.071.
  • APPROPRIATE PRESCRIBING AS A PART OF MULTI-MORBIDITY CARE OF COMPLEX OLDER ADULTSGnjidic D, Allore H, Hilmer S. APPROPRIATE PRESCRIBING AS A PART OF MULTI-MORBIDITY CARE OF COMPLEX OLDER ADULTS Innovation In Aging 2017, 1: 738-739. PMCID: PMC6248561, DOI: 10.1093/geroni/igx004.2662.
  • EARLY UPTAKE OF NEW U.S. CENTER FOR MEDICARE AND MEDICAID SERVICES’ ADVANCE CARE PLANNING PAYMENTTai-Seale M, Yang Y, Dillon E, Tapper S, Lai S, Yu P, Allore H, Ritchie C. EARLY UPTAKE OF NEW U.S. CENTER FOR MEDICARE AND MEDICAID SERVICES’ ADVANCE CARE PLANNING PAYMENT Innovation In Aging 2017, 1: 112-112. PMCID: PMC6242146, DOI: 10.1093/geroni/igx004.465.
  • ESTIMATING TREATMENT EFFECT OF HALOPERIDOL ON DELIRIUM SYMPTOMS USING OBSERVATIONAL DATAHan L, Pisani M, Araujo K, Allore H. ESTIMATING TREATMENT EFFECT OF HALOPERIDOL ON DELIRIUM SYMPTOMS USING OBSERVATIONAL DATA Innovation In Aging 2017, 1: 965-965. PMCID: PMC6185498, DOI: 10.1093/geroni/igx004.3482.
  • Functional trajectories before and after a new cancer diagnosis among community-living older adults.Presley C, Hurria A, Han L, Leo-Summers L, Gross C, Allore H, Davidoff A, Gill T. Functional trajectories before and after a new cancer diagnosis among community-living older adults. Journal Of Clinical Oncology 2017, 35: e21547-e21547. DOI: 10.1200/jco.2017.35.15_suppl.e21547.
  • Patient-Reported Outcomes Collected as Part of the Medicare Annual Wellness Visit in the Health Care Systems Research NetworkTabano H, Gill T, Anzuoni K, Allore H, Gruber-Baldini A, Dublin S, Elliott T, Ganz D, Tai-Seale M, Gurwitz J, Bayliss E. Patient-Reported Outcomes Collected as Part of the Medicare Annual Wellness Visit in the Health Care Systems Research Network Journal Of Patient-Centered Research And Reviews 2016, 3: 168. DOI: 10.17294/2330-0698.1276.
  • P1‐442: Is There a Difference in Health‐Related Quality of Life in Caregivers Based on The Living Situation of The Person with Dementia Over One Year?Vroomen J, Hoeben J, Peeters C, Bosmans J, De Rooij S, Allore H, Monin J, Hout H. P1‐442: Is There a Difference in Health‐Related Quality of Life in Caregivers Based on The Living Situation of The Person with Dementia Over One Year? Alzheimer's & Dementia 2016, 12: p604-p604. DOI: 10.1016/j.jalz.2016.06.1194.
  • P2‐413: Anticholinergic Drug Burden Predicts Delirium Severity Among Older Medical Patients Under Intensive CareHan L, Allore H, Araujo K, Pisani M. P2‐413: Anticholinergic Drug Burden Predicts Delirium Severity Among Older Medical Patients Under Intensive Care Alzheimer's & Dementia 2016, 12: p803-p803. DOI: 10.1016/j.jalz.2016.06.1625.
  • Statistical Analysis of Human Immunologic Studies: Mixed Effects ModelingAllore H, Trentalange M. Statistical Analysis of Human Immunologic Studies: Mixed Effects Modeling 2016, 117-134. DOI: 10.1142/9789814678735_0010.
  • Health Outcome Effects of Common Medications in Elders With Multiple ConditionsAllore H, McAvay G, Tinetti M. Health Outcome Effects of Common Medications in Elders With Multiple Conditions Journal Of Patient-Centered Research And Reviews 2015, 2: 106. DOI: 10.17294/2330-0698.1118.
  • Statistical issues in designing and interpreting clinical trials in older adultsAllore H, Espeland M, Miller M. Statistical issues in designing and interpreting clinical trials in older adults 2015, 107-124. DOI: 10.1002/9781118323434.ch7.
  • Combined effect of adiposity measures on physical performance in older adultsde Rekeneire N, Botoseneanu A, Allore H, Gill T. Combined effect of adiposity measures on physical performance in older adults European Geriatric Medicine 2013, 4: s90. DOI: 10.1016/j.eurger.2013.07.294.
  • Alterations In Toll-Like Receptor 4 Function Secondary To Smoking And AgeKnauert-Brown M, Xu X, Shan P, Qin L, Araujo K, Allore H, Pisani M, Lee P. Alterations In Toll-Like Receptor 4 Function Secondary To Smoking And Age 2012, a1314-a1314. DOI: 10.1164/ajrccm-conference.2012.185.1_meetingabstracts.a1314.
  • Gerontologic research algorithms and statistical programs (GRASP): A web-based biostatistical repository for gerontological researchersHan L, Allore H, Group O. Gerontologic research algorithms and statistical programs (GRASP): A web-based biostatistical repository for gerontological researchers Alzheimer's & Dementia 2010, 6: s318-s319. DOI: 10.1016/j.jalz.2010.05.1040.