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Table 3 Summary of the event distribution probabilities for the simulated scenarios

From: Interim analysis for binary outcome trials with a long fixed follow-up time and repeated outcome assessments at pre-specified times

Scenario

Event distribution probabilities by visit time

t 1 , t 2 , t 3 , t 4

Standard group

Experimental group

1

0.25, 0.25, 0.25. 0.25

same as standard

2

0.35, 0.30, 0.20, 0.15

same as standard

3

0.15, 0.20, 0.30, 0.35

same as standard

4

0.15, 0.20, 0.30, 0.35

0.35, 0.30, 0.20, 0.15

5

0.35, 0.30, 0.20, 0.15

0.15, 0.20, 0.30, 0.35