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. 2020 Aug 17;20:211. doi: 10.1186/s12874-020-01097-6

Table 9.

The summary table of simulation scenarios and results comparison

Scenarios AE #1 AE #2 AE #3 AE #4 AE #5 AE #6 AE #7

Scenario I

(Safe: #1234567)

Safe Safe Safe Safe Safe Safe Safe
Baseline proportions

Scenario II

(Unsafe: #1234567 same effect)

Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe
Compare to Baseline proportions scenario I
Proportions increase a lot (All effect scenario)

Scenario III

(Safe: #4,5,6,7;

Unsafe: #1,2,3 same effect)

Unsafe Unsafe Unsafe Safe Safe Safe Safe
Compare to Baseline proportions scenario I
Higher proportions Smaller proportions

Scenario IV

(Unsafe: #4,5,7 flat effect; Unsafe: #1,2,3,6 same effect)

Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe
Comparing to scenario II

Similar

proportions

Proportion

decreases

Proportion

decreases

Similar

proportion

Proportion

decreases

Scenario V

(Unsafe: #1234567 flat effect; unsafe for control arms)

Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe Unsafe
The model flags potential signals at the blinded stage but not at the unblinded stage with fewer proportions comparing to other scenarios.