Sample Size Calculations with Dropouts in Clinical Trials
نویسندگان
چکیده
منابع مشابه
Adjusting sample size for anticipated dropouts in clinical trials.
Statistical models for calculating sample sizes for controlled clinical trials often fail to take into account the negative impact that dropouts have on the power of intent-to-treat analyses. Empirically defined dropout correction coefficients are proposed to adjust sample sizes for endpoint analysis of variance (ANOVA) and analysis of covariance (ANCOVA) that have been initially calculated ass...
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ژورنال
عنوان ژورنال: Communications for Statistical Applications and Methods
سال: 2008
ISSN: 2287-7843
DOI: 10.5351/ckss.2008.15.3.353