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On gehan's wilcoxon and the accelerated failure time model |
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| Authors: | Ramesh C Gupta Joel E Michalek |
| Institution: | 1. Department of Mathematics , University of Maine , Orono, Maine, 04469;2. Biomathematics Modeling Branch. USAF School of Aerospace Xedicine , Brooks Air Force Base, Texas, 78235 |
| Abstract: | A proof is provided to show that Gehan's 1965 generalization of the two sample Wilcoxon test lies outside the class of efficient score procedures for right censored data (Prentice 1978). |
| Keywords: | accelerated failure time model linear rank procedures survival analysis |