American Journal of Epidemiology, Vol 152, Issue 9 884-888, Copyright © 2000 by Oxford University Press
AD Liese, HW Hense, H Brenner, H Lowel and U Keil
The risk or rate advancement period (RAP) proposed by Brenner et al.
(Epidemiology 1993;4:229-36) conveys information on the impact of a risk
factor on the age dimension of chronic disease occurrence and may thus
facilitate communication of epidemiologic findings. The RAP expresses how
much sooner a given risk or rate of disease occurrence is reached among
exposed than among unexposed individuals. The purpose of the present
analysis was to derive estimates of RAPs for cardiovascular risk factors in
relation to incident nonfatal and fatal myocardial infarction in
middle-aged men of the Monitoring Trends and Determinants in Cardiovascular
Diseases (MONICA) Augsburg cohort, Germany, between 1984 and 1995. RAPs
were estimated based on Cox proportional hazards models. After multivariate
adjustment, hypertension, smoking, and dyslipidemia were associated with
RAPs of 8, 11, and 11 years, respectively, conditional on infarction-free
survival to baseline and absence of competing risks. The RAP may be
interpreted as that, on average, smokers are expected to advance their risk
of myocardial infarction approximately 11 years compared with never/former
smokers; for example, 50-year-old smokers are expected to carry the same
risk of infarction as 61-year-old nonsmokers. The authors encourage the use
and evaluation of the RAP as an effective risk communication tool in actual
counseling situations.
Assessing the impact of classical risk factors on myocardial infarction by rate advancement periods [In Process Citation]
Institute of Epidemiology and Social Medicine, University of Munster, Germany. aliese@sph.sc.edu
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