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Am J Epidemiol 2004; 159:214-215.
Copyright © 2004 by the Johns Hopkins Bloomberg School of Public Health

LETTERS TO THE EDITOR

THE AUTHORS REPLY

Louise-Anne McNutt1, Chuntao Wu1, Xiaonan Xue2 and Jean Paul Hafner3

1 Department of Epidemiology, School of Public Health, University at Albany, State University of New York, Rensselaer, NY.
2 Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY.
3 Departments of Pulmonary and General Internal Medicine, Samuel S. Stratton Department of Veterans Affairs Medical Center, Albany, NY

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We thank Dr. Cummings (1) and Drs. Deddens and Petersen (2) for their observations on our paper (3). Many cohort studies focus on disease or death as the outcome. These events typically occur infrequently enough in a study period to be considered mathematically rare (i.e., <10 percent). Researchers in such studies utilize logistic regression when approximately equal follow-up . . . [Full Text of this Article]


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