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Johns Hopkins Center on Aging and Health

Biostatistics Core (COAH)
Key Personnel


COAH Biostatistics Data Management
The Data Group within the Center on Aging and Health's Biostatistics Core performs several functions concerning management, collection and interpretation of data.

Primarily, it maintains a data repository of the major studies conducted by the center. This includes WHAS I, WHAS II, Cognitive Pathways, WHAS III and Experience Corps. Investigators who would like to use the data in these studies for their own analysis can apply to access the data using the COAH Data Acquisition and Repository System (DARS).

As a function of the data repository, the Data Group also maintains a specialized meta-database that describes the data from previously conducted studies. This is used, in part, to organize and explain the physical data so investigators can select appropriate data sets for their proposals submitted to the DARS.

The Group also handles data management duties for active studies. It employs several technologies in this role, including scannable forms, Access databases and the ResearcherTools clinical trials system.

COAH Data Acquisition and Repository System (DARS)
The DARS is a Web-based application that allows researchers to submit proposals to the Center's Publication Committees for access to Center data. The application helps speed the process by which approval is granted to access data, and ensures that analyses are unique, meet the aims of the studies and are important to the advancement of geriatric research.

To access the DARS, you must first register. Once your registration is approved, you can submit proposals. Please read this overview of the approval process to get a better understanding of how the DARS works.

ResearchTools is a Web-based Clinical Trials Management system based on Yale's TrialDB CTM. Ported by the COAH Staff to SQL Server, the system currently manages studies on geriatric surgery funded through the Center. ResearcherTools, however, is flexible enough to manage any kind of study, from multi-site clinical trials, to single-site longitudinal epidemiological studies.

Statistical Consultation (Help Desk)
Available to COAH/Division faculty and fellows/trainees who need assistance with their statistical projects.

Statistical References
Online journal access available only to Hopkins community

The American Statistician, 1947 - 1999
Annals of Statistics, 1973 - 2001
Journal of Applied Statistics, 1995 -
Journal of the American Statistical Association, 1922 - 1999, 2001 -
Biometrics, 1947 -
Biometrika, 1901 - 1999
Lifetime Data Analysis, 1997 -
Statistics in Medicine, 1996 -
Statistical Science, 1986 - 2001
Technometrics, 1959 - 1999
Journal of the Royal Statistical Society, Series B (Statistical Methodology), 1997 -

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In the News

Dr.  Bandeen-Roche and colleagues found that 15% of older Americans are frail, and 45% are prefrail, in a large nationally representative study.

Dr. Frank Lin was awarded an NIH grant to develop and implement a community health worker model for providing hearing care to older adults.

Dr. Roth and colleagues showed that providing care to a family member with a chronic illness or disability may be associated with modest survival benefit for the caregivers in the REGARDS study.

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The Epidemiology and Biostatistics of Aging Training Program is currently seeking a postdoctoral fellow. Applications are due by May 12, 2016. Please click here for more information.

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