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Table 4 Empirical type 1 error (size) of the nine tests in pooled simulated samples with low or high event rates and ≤100 events in each simulation replicate

From: A simulation study comparing the power of nine tests of the treatment effect in randomized controlled trials with a time-to-event outcome

TestAbbrev-Low event rateHigh event rate
 iationSize95% CISize95% CI
LogrankLR5.2(4.9,5.6)5.5(5.1,5.8)
Logrank (early)LRE5.2(4.9,5.6)5.3(4.9,5.6)
Logrank (late)LRL4.8(4.5,5.2)6.0(5.6,6.3)
Supremum logrankSupLR4.3(4.0,4.6)4.5(4.2,4.9)
JointJ5.2(4.9,5.6)5.1(4.8,5.5)
CombinedC5.1(4.7,5.4)5.6(5.2,5.9)
Weighted combinedWC4.7(4.4,5.0)6.2(5.8,6.6)
Versatile WLRVWLR5.1(4.8,5.4)5.7(5.3,6.1)
Versatile WLR (modified)VWLR25.0(4.7,5.4)5.7(5.4,6.1)
  1. Pooled sample sizes of simulated datasets are 15,818 and 15,527, respectively