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Table 1 Significance level. As scenario 3 shows, we will be able to discover an intervention effect of 3% if 1892 individuals in two groups participate in the study

From: Protocol for the effect evaluation of independent medical evaluation after six months sick leave: a randomized controlled trial of independent medical evaluation versus treatment as usual in Norway

 

Expected effect levela

Sample size

Scenario 1:

Control group: 15% and IME: 16%

16,194 in each group

Scenario 2:

Control group: 15% and IME: 17%

4154 in each group

Scenario 3:

Control group: 15% and IME: 18%

1892 in each group

Scenario 4:

Control group: 15% and IME: 19%

1090 in each group

Scenario 5:

Control group: 15% and IME: 20%

714 in each group

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BMC Public Health

ISSN: 1471-2458

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