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Updated: Jul 12, 2026

An R-Based Landscape Validation of a Competing Risk Model
05:37

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统计剂对冠心病风险的影响:随机对照试验的元分析

J C LaRosa1, J He, S Vupputuri

  • 1Office of the President, State University of New York Health Science Center at Brooklyn, 11203, USA. jclarosa@netmail.hscbklyn.edu

JAMA
|December 28, 1999
PubMed
概括

类固醇药物治疗显著降低了主要冠状动脉事件的风险和所有原因的死亡率. 观察到这种益处在男女,老年人和年轻人中是一致的.

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Introduction to Test of Independence

In statistics, the term independence means that one can directly obtain the probability of any event involving both variables by multiplying their individual probabilities. Tests of independence are chi-square tests involving the use of a contingency table of observed (data) values.
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Randomized Experiments

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Simple randomization
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