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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Biometrics. 2012 Sep;68(3):983–989. doi: 10.1111/j.1541-0420.2011.01723.x
Method Test statistic p-value
Log rank 54.8 1.34 × 10−13
Gehan 69.1 1.11 × 10−16
Chi square (proposed) 50.75 1.05 × 10−12
CombP (proposed) 54.63 1.37 × 10−12