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Department of Medicine

Department of Medicine

   Division of Geriatric Medicine

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photo Subashan Perera, PhD

Associate Professor of Medicine

Co-Director & Senior Statistician, Data Management and Analysis Core of the Pittsburgh Claude D. Pepper Older Americans Independence Center

Email: ksp9@pitt.edu

Phone: 412-692-2365

Contact
Office: 3471 Fifth Avenue
Kaufmann Medical Building, Suite 500
Pittsburgh, PA 15213
 
Phone: 412-692-2365
Fax: 412-692-2370
E-mail: ksp9@pitt.edu
Administrative Assistant:
Beth Thomas
Address: 3471 Fifth Ave, Suite 500
Kaufmann Medical Bldg
Pittsburgh, PA 15213
Email: eat8@pitt.edu
Phone: 412-864-2507
Fax: 412-692-2370
Education and Training
Education
BS, Computer Science, University of Wisconsin-Eau Claire, 1992
MS, Mathematics, Kansas State University, 1994
MS, Statistics, Kansas State University, 1996
PhD, Statistics, Kansas State University, 2000
Research Interest
An Associate Professor, Dr Perera is a biostatistician with special interest in aging, time series analysis, and classification and regression trees. His work has involved estimating criteria for clinically meaningful change in physical performance measures of the elderly, and examining their association with future outcomes using large data sets. Dr Perera also co-leads the Data Management and Analysis Core of our Pepper Center, in addition to serving as co-investigator for several other NIH, AHRQ, VA and PCORI grants funded within and outside of the Division.
Publications
For my complete bibliography, Click Here.
Selected Publications:
Perera S, Patel KV, Rosano C, Chandler JM, Newman A, Cauley J, Guralnik J, Ferrucci L, Studenski S. Gait Speed Predicts Incident Disability: A Pooled Analysis. Journal of Gerontology-Series A: Biological Sciences & Medical Sciences. 2016; 71: 63-71.
Perera S, Studenski SA, Newman AB, Simonsick EM, Harris T, Schwartz A, Visser M. Are Estimates of Meaningful Decline in Mobility Performance Consistent among Clinically Important Subgroups?. Journal of Gerontology: Medical Sciences. 2014; 69A: 1260-1268.
Studenski S, Perera S, Patel K. Gait Speed and Survival in Older Adults. Journal of the American Medical Association. 2011; 305: 50-58.
Perera S. Normal theory and bootstrap confidence interval estimation for assessing diagnostic performance gain when combining two diagnostic tests. Communications in Statistics-Series B: Simulation and Computation. 2008; 37: 2076-2088.
Perera S, Mody SH, Woodman RC, Studenski SA. Meaningful change and responsiveness in common physical performance measures in older adults. Journal of the American Geriatrics Society. 2006; 54: 743-749.
Perera S, Studenski S, Chandler JM, Guralnik J. Magnitude and patterns of decline over one year in health and function affect survival over five years. Journals of Gerontology-Series A: Biological Sciences and Medical Sciences. 2005; 60: 894-900.
Perera S. Maximum quasi-likelihood estimation for the NEAR(2) model. Journal of Time Series Analysis. 2004; 25: 723-732.
Perera S. Approximate Bayes estimation of parameters of the NEAR(2) model. Far East Journal of Theoretical Statistics. 2004; 14: 203-213.
Perera S. Maximum quasilikelihood estimation for a simplified NEAR(1) model. Statistics & Probability Letters. 2002; 58: 147-155.
Perera S. An analysis of daily peak discharge of Kaukonahua Stream, Hawaii, using a new exponential autoregressive model. Proceedings of the 13th Annual Conference on Applied Statistics in Agriculture. 2001; 222-233.
Sponsored Research/Activities
Title: Sustaining Skeletal Health in Frail Elderly
Role: Co-Investigator
Funding Agency: National Institute of Aging
Grant Number: R01 AG052123
Start Year: 2016
End Year: 2021
Title: Autoimmunity and Emphysema and Risk of Osteoporosis in Smokers
Role: Co-Investigator
Funding Agency: National Heart, Lung, & Blood Institute
Grant Number: R01 HL128289
Start Year: 2016
End Year: 2021
Title: Task Specific Timing and Coordination Exercises to Improve Mobility in Older Adults
Role: Co-Investigator
Funding Agency: National Institute of Aging
Grant Number: R01 AG045252
Start Year: 2015
End Year: 2020
Title: Pittsburgh Older Americans Independence Center DMAC
Role: Core Leader
Funding Agency: National Institute of Aging
Grant Number: P30 AG024827
Start Year: 2015
End Year: 2020
Title: Maintenance of Skeletal Integrity in Frail Elders - Phase 2
Role: Biostatistician
Funding Agency: National Institute of Aging
Grant Number: R01 AG050302
Start Year: 2015
End Year: 2020
Title: The Aging Brain and the Cognition - Mobility Interface in Clinically Normal Older Adults
Role: Biostatistician
Funding Agency: National Institute of Aging
Grant Number: K23 AG049945
Start Year: 2015
End Year: 2020
Title: Understanding Patient-Specific Deficits Causing Step Asymmetry Post-Stroke: A Step Towards Personalizing Gait Rehabilitation
Role: Co-Investigator
Funding Agency: American Heart Association-Great Rivers
Start Year: 2015
End Year: 2018
Title: Improving Outcomes of UTI in LTC Facilities: The IOU Study
Role: Biostatistician
Funding Agency: Agency for Healthcare Research and Quality
Grant Number: R18 HS023779
Start Year: 2015
End Year: 2018
Title: Biomarkers Predictive of Lung Function in Decline in Physiologically Normal Smokers
Role: Co-Investigator
Funding Agency: National Heart, Lung, & Blood Institute
Grant Number: R21 HL129917
Start Year: 2015
End Year: 2017
Title: Cumulative CNS Medication Dosage and Serious Fall Injuries
Role: Co-Investigator
Funding Agency: The Donaghue Foundation
Start Year: 2015
End Year: 2016
Title: Mechanisms/Treatments of Lower Urinary Tract Dysfunction After Spinal Cord Injury - Core B
Role: Biostatistician
Funding Agency: National Institute of Diabetes, Digestive, & Kidney Disease
Grant Number: P01 DK093424
Start Year: 2013
End Year: 2018
Title: Cell Autonomous and Non-Autonomous Mechanisms of Aging - Core A
Role: Core Leader
Funding Agency: Scripps Research Institute/National Institute of Aging
Grant Number: P01 AG043376
Start Year: 2013
End Year: 2018
Title: Tobacco Phase 12 Formula Funds
Role: Statistician
Funding Agency: Commonwealth of Pennsylvania
Start Year: 2013
End Year: 2016
Title: On the Move: Optimizing Participation in Group Exercise to Prevent Walking Difficulty in At-Risk Older Adults
Role: Co-Investigator
Funding Agency: Patient-Centered Outcomes Research Institute
Start Year: 2013
End Year: 2016
Title: Improving Medication Safety for Nursing Home Residents Prescribed Psychotropic Drugs
Role: Biostatistician
Funding Agency: National Institute of Aging
Grant Number: K01 AG044433
Start Year: 2013
End Year: 2016
Title: Obesity and Body Segment Parameters in Working Adults
Role: Co-Investigator
Funding Agency: National Institute for Occupational Safety and Health
Grant Number: R01 OH010106
Start Year: 2013
End Year: 2016
Title: Maintenance of Skeletal Integrity in Frail Elders
Role: Biostatistician
Funding Agency: National Institute of Aging
Grant Number: R01 AG028086
Start Year: 2013
End Year: 2014
Title: The Role of Teriparatide for Healing of Atypical Femoral Shaft Fractures
Role: Co-Investigator
Funding Agency: Eli Lilly Company
Start Year: 2012
End Year: 2017
Title: Postural Control in the Elderly: The Role of Attention
Role: Biostatistician
Funding Agency: National Institute of Aging
Grant Number: R01 AG014116
Start Year: 2012
End Year: 2016
Title: Determining the Impact of a Medication Delivery Unit on Medication Adherence Immediately Following Hospitalization of Adults with Congestive Heart Failure
Role: Co-Investigator
Funding Agency: INRange Systems, Inc.
Grant Number: DRUG
Start Year: 2012
End Year: 2013
Title: The Effects of a Computer-Generated Rounding Report on Physician Workflow in the Nursing Home
Role: Co-Investigator
Funding Agency: American Medical Directors Association Foundation
Start Year: 2012
End Year: 2013
Title: Molecular and Cellular Determinants of Disease Heterogeneity in COPD - Core C
Role: Co-Investigator
Funding Agency: National Heart, Lung, & Blood Institute
Grant Number: P50 HL084948
Start Year: 2012
End Year: 2013
Title: VA Knee Osteoarthritis Study
Role: Biostatistician
Funding Agency: Veterans Administration
Grant Number: IPA
Start Year: 2012
End Year: 2013
Title: Enhancing the Detection and Management of Adverse Drug Events in the Nursing Home
Role: Biostatistician
Funding Agency: Agency for Healthcare Research and Quality
Grant Number: R01 HS018721
Start Year: 2010
End Year: 2015
Title: Influence of White Matter Damage on Step Initiation
Role: Co-Investigator
Funding Agency: National Institute of Aging
Grant Number: R01 AG031118
Start Year: 2008
End Year: 2012
Title: The Effect of Bisphosphonate on Bone Mass and Bone Turnover in Elderly, Postmenopausal Women with Breast Cancer Following Initiation of Aromatasa Inhibitor Therapy
Role: Co-Investigator
Funding Agency: Proctor & Gamble
Grant Number: DRUG
Start Year: 2007
End Year: 2013
Title: Pittsburgh Older Americans Independence (DMAC)
Role: Core Leader
Funding Agency: National Institute of Aging
Grant Number: P30 AG024827
Start Year: 2004
End Year: 2015
Notable Achievements
VA Health Services Research and Development Scientific Merit Review Board HSR-7 for Aging and Diminished Capacity in the Context of Aging, 2015