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Table 2 Power function to test homogeneity of the control and intervention group as a function of the effect size

From: Effectiveness of a healthcare-based mobile intervention on sedentary patterns, physical activity, mental well-being and clinical and productivity outcomes in office employees with type 2 diabetes: study protocol for a randomized controlled trial

Effect size (∆μ = d ∙ σ))

Power function

Small (d = 0.2)

(n = 1084, power 0.91)

 

Medium (d = 0.5)

(n = 176 power 0.91)

 

Large  (d = 0.5)

(n = 70 power 0.91)

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