Effect of differential mortality on risk behavior change in cohort studies
|Title||Effect of differential mortality on risk behavior change in cohort studies|
|Publication Type||Journal Article|
|Year of Publication||1993|
|Authors||Blower, SM, van Griensven GJ|
|Journal||J Acquir Immune Defic Syndr|
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.