A comparison of sample size methods for the logrank statistic
- 1 January 1992
- journal article
- research article
- Published by Wiley in Statistics in Medicine
- Vol. 11 (2) , 179-191
- https://doi.org/10.1002/sim.4780110205
Abstract
Several methods are available for sample size calculation for clinical trials when survival curves are to be compared using the logrank statistic. We discuss advantages and disadvantages of some of these methods, and present simulation results under exponential, proportional hazards and non-proportional hazard situations.Keywords
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