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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

Test

Abbrev-

Low event rate

High event rate

 

iation

Size

95% CI

Size

95% CI

Logrank

LR

5.2

(4.9,5.6)

5.5

(5.1,5.8)

Logrank (early)

LRE

5.2

(4.9,5.6)

5.3

(4.9,5.6)

Logrank (late)

LRL

4.8

(4.5,5.2)

6.0

(5.6,6.3)

Supremum logrank

SupLR

4.3

(4.0,4.6)

4.5

(4.2,4.9)

Joint

J

5.2

(4.9,5.6)

5.1

(4.8,5.5)

Combined

C

5.1

(4.7,5.4)

5.6

(5.2,5.9)

Weighted combined

WC

4.7

(4.4,5.0)

6.2

(5.8,6.6)

Versatile WLR

VWLR

5.1

(4.8,5.4)

5.7

(5.3,6.1)

Versatile WLR (modified)

VWLR2

5.0

(4.7,5.4)

5.7

(5.4,6.1)

  1. Pooled sample sizes of simulated datasets are 15,818 and 15,527, respectively