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A comparison of sample size methods for the logrank statistic
Author(s) -
Lakatos Edward,
Lan K. K. Gordon
Publication year - 1992
Publication title -
statistics in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.996
H-Index - 183
eISSN - 1097-0258
pISSN - 0277-6715
DOI - 10.1002/sim.4780110205
Subject(s) - statistic , statistics , sample size determination , log rank test , rank (graph theory) , computer science , mathematics , survival analysis , combinatorics
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.