期刊
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
卷 104, 期 2, 页码 266-270出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.cmpb.2011.02.001
关键词
Logrank test; Cluster randomized trial; Clustered logrank test; SAS macro
类别
资金
- National Institutes of Health [AG-027400]
- [NRSA/T32 AR055885-03]
The clustered logrank test is a nonparametric method of significance testing for correlated survival data. Examples of its application include cluster randomized trials where groups of patients rather than individuals are randomized to either a treatment or a control intervention. We describe a SAS macro that implements the 2-sample clustered logrank test for data where the entire cluster is randomized to the same treatment group. We discuss the theory and applications behind this test as well as details of the SAS code. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
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