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Table 1 Power of analysis of primary endpoints under different assumptions of the intra-cluster correlation coefficient (ICC) and the standardised effect size

From: Implementation of shared decision making by physician training to optimise hypertension treatment. Study protocol of a cluster-RCT

Standardised effect size 0,20 0,25 0,30 0,35 0,40 0,50 0,20 0,25 0,30 0,35 0,40 0,50
ICC 0,05 0,05 0,05 0,05 0,05 0,05 0,03 0,03 0,03 0,03 0,03 0,03
Power (in %) 37,14 55,96 73,51 86,58 94,35 99,45 46,71 67,62 84,05 93,78 98,11 99,92