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Table 1 Statistical power calculated from the coefficient of variation and number of patients per time period

From: Evaluation of an interactive program for preventing adverse drug events in primary care: study protocol of the InPAct cluster randomised stepped wedge trial

Cv

184 patients per time period

208 patients per time period

240 patients per time period

0

0.80

0.85

0.89

0.1

0.80

0.84

0.89

0.2

0.78

0.83

0.87

0.3

0.76

0.81

0.85

0.4

0.74

0.78

0.83

0.5

0.72

0.76

0.81