Ak-Sample Median Test for Censored Data
作者:
Ron Brookmeyer,
John Crowley,
期刊:
Journal of the American Statistical Association
(Taylor Available online 1982)
卷期:
Volume 77,
issue 378
页码: 433-440
ISSN:0162-1459
年代: 1982
DOI:10.1080/01621459.1982.10477829
出版商: Taylor & Francis Group
关键词: Censored data;Median test;Survival analysis
数据来源: Taylor
摘要:
Ak-sample median test for censored data is proposed. The test is more sensitive to differences in median survival times than to differences in shape of the survival curves. The asymptotic distribution of the test statistic is derived under both the null and the alternative hypotheses and its variance is shown to take a simple form. The median test is compared to several other tests for censored data by computing asymptotic relative efficiencies and performing a Monte Carlo simulation under various conditions. The procedure described is applied to data from a colorectal cancer clinical trial.
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