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Establishing a Competing Risk Regression Nomogram Model for Survival Data
Published on: October 23, 2020
Effect of differential mortality on risk behavior change in cohort studies
S M Blower1, G J van Griensven
1Biomedical and Environmental Health Sciences, School of Public Health, University of California, Berkeley 94720.
Abstract:
Recent theoretical work suggests that reductions in aggregate measures of risk behaviors are to be expected during a human immunodeficiency virus epidemic, because mortality is likely to be differential with respect to the level of the risk behavior. We present and apply a methodology for quantifying the effects of differential mortality on risk behavior changes in closed cohort studies. We demonstrate that differential mortality has caused 21% of the observed reduction in the mean, 29% of the observed reduction in the effective average, and 33% of the observed reduction in the variance of a risk behavior in a cohort of gay men.
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