Sample Size Estimation for Log-Rank Test for Phase III Clinical Trials.

Jung, Sin Ho; Choi, Jae Hee; Park, Byung Joo

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Clinical Trial

Korean Journal of Epidemiology 1997;19(1): 67-72.

Sample Size Estimation for Log-Rank Test for Phase III Clinical Trials.

Sin Ho Jung, Jae Hee Choi, Byung Joo Park

Abstract

At first, we review a sample size estimation method for log-rank test in survival analysis. Although it is widely used these days, it has a weakness for practical use. We propose a modification method to avoid the weakness.

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