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Methods to evaluate risks for composite end points and their individual components.

Abstract：

OBJECTIVE:Both randomized and observational studies commonly examine composite end points, but the literature on model development and criticism in this setting is limited. STUDY DESIGN AND SETTING:We examined approaches for evaluating heterogeneity in the effects of risk factors for different components of the end point, and determining the impact of heterogeneity on the ability to predict the composite end point. A specific example considered the composite cardiovascular disease end point in the Physicians' Health Study that occurred in 1,542 (myocardial infarction, n = 716; stroke, n = 557; cardiovascular death, n = 269) of 16,688 participants with complete information on baseline covariates. The strategy compared alternative polytomous logistic regression models assuming different effects of risk factors on components of the end point and a comparable logistic model assuming common effects. RESULTS:Likelihood ratio tests identified heterogeneity in the effects of age, alcohol consumption, and diabetes across components of the outcome, but comparability in the effects of other risk factors. However, a model assuming uniform effects explained over 90% of the log-likelihood change in the best polytomous model, and the two models also performed similarly based on a comparison of ROC curves. CONCLUSION:The overall strategy may be helpful for evaluating the validity of a composite end point analysis and identifying heterogeneity in risk factors.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Glynn RJ,Rosner B

doi

10.1016/j.jclinepi.2003.02.001

subject

Has Abstract

pub_date

2004-02-01 00:00:00

pages

113-22

issue

2

eissn

0895-4356

issn

1878-5921

pii

S0895435603003135

journal_volume

57

pub_type

杂志文章

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