Improved Logrank-Type Tests for Survival Data Using Adaptive Weights
نویسندگان
چکیده
منابع مشابه
Non-Inferiority Logrank Tests
Individuals are recruited during an accrual period of R years (or months or days). They are followed for an additional period of time until a total of T years is reached. Hence, the follow-up period is T-R years. At the end of the study, the non-inferiority logrank test is conducted at significance level α with power 1− β . Under the proportion hazards assumption, the hazard ratio HR = h2 / h1 ...
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This module allows the sample size and power of the logrank test to be analyzed under the assumption of proportional hazards. Time periods are not stated. Rather, it is assumed that enough time elapses to allow for a reasonable proportion of responses to occur. If you want to study the impact of accrual and follow-up time, you should use the one of the other logrank modules also contained in PA...
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ژورنال
عنوان ژورنال: Biometrics
سال: 2009
ISSN: 0006-341X
DOI: 10.1111/j.1541-0420.2009.01243.x