Department of Medicine

University of Pittsburgh

Subashan Perera, PhD

photo

Associate Professor of Medicine

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

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

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

Area of Specialization/Research Interest  
Aging
Balance & Mobility
Time Series Analysis
Bootstrapping
Item Response Theory
Classification Trees
 

Profile
Subashan Perera is a Biostatistician with collaborative research interests in aging. He was a Biostatistician in the Theo and Alfred Landon Center on Aging and an Assistant Professor in the Department of Preventive Medicine and Public Health at the University of Kansas Medical Center, and moved to Pittsburgh in 2004. His past research collaborations in aging were in areas of stroke, physical performance measures in the elderly, long-term care, bone health and back pain. He currently serves as the Co-Director and Senior Statistician of the Data Management and Analysis Core of the Pittsburgh Claude D. Pepper Older Americans Independence Center.

Recent Grants
Title: Enhancing the Detection and Management of Adverse Drug Events in the Nursing Home
Role: Co-Investigator
Amount:
Funding Agency: AHRQ R01
Start Year: 2010
End Year: 2014
Title: Pittsburgh Claude D. Pepper Older Americans Independence Center
Role: Co-Director & Senior Statistician, Data Managment and Analysis Core
Amount:
Funding Agency: NIA/NIH P30
Start Year: 2009
End Year: 2014
Title: Medicare Part D Cost-Sharing and Treatment of Mental Disorders Among Disabled Dual Eligible Beneficiaries
Role: Co-Investigator
Amount:
Funding Agency: NIH R34
Start Year: 2009
End Year: 2011
Title: Effect of Anticholinergic Drugs and White Matter Hyperintensities on Balance and Gait
Role: Co-Investigator
Amount:
Funding Agency: NIH R01
Start Year: 2009
End Year: 2013

Recent Peer-Reviewed Publications
Title: Gait Speed and Survival in Older Adults
Author(s): Studenski S, Perera S, Patel K
Year: 2011
Journal: Journal of the American Medical Association
Volume: 305
Page(s): 50-58
Title: Normal theory and bootstrap confidence interval estimation for assessing diagnostic performance gain when combining two diagnostic tests
Author(s): Perera S
Year: 2008
Journal: Communications in Statistics-Series B: Simulation and Computation
Volume: 37
Page(s): 2076-2088
Title: Meaningful change and responsiveness in common physical performance measures in older adults
Author(s): Perera S, Mody SH, Woodman RC, Studenski SA
Year: 2006
Journal: Journal of the American Geriatrics Society
Volume: 54
Page(s): 743-749
Title: Magnitude and patterns of decline over one year in health and function affect survival over five years
Author(s): Perera S, Studenski S, Chandler JM, Guralnik J
Year: 2005
Journal: Journals of Gerontology-Series A: Biological Sciences and Medical Sciences
Volume: 60
Page(s): 894-900
Title: Approximate Bayes estimation of parameters of the NEAR(2) model
Author(s): Perera S
Year: 2004
Journal: Far East Journal of Theoretical Statistics
Volume: 14
Page(s): 203-213
Title: Maximum quasi-likelihood estimation for the NEAR(2) model
Author(s): Perera S
Year: 2004
Journal: Journal of Time Series Analysis
Volume: 25
Page(s): 723-732
Title: Maximum quasilikelihood estimation for a simplified NEAR(1) model
Author(s): Perera S
Year: 2002
Journal: Statistics & Probability Letters
Volume: 58
Page(s): 147-155
Title: An analysis of daily peak discharge of Kaukonahua Stream, Hawaii, using a new exponential autoregressive model
Author(s): Perera S
Year: 2001
Journal: Proceedings of the 13th Annual Conference on Applied Statistics in Agriculture
Volume:
Page(s): 222-233
Title: A method based on the Kolmogorov-Smirnov statistic to choose between time series models with exponential and Gaussian marginal distributions
Author(s): Perera S
Year: 2001
Journal: Proceedings of the American Statistical Association
Volume:
Page(s):
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