Skip to main content

Table 4 Study power depending on number of clusters and average cluster size

From: Evaluation of a tailored intervention to improve management of overweight and obesity in primary care: study protocol of a cluster randomised controlled trial

Average cluster size (M) > 1,130 163-212 213-309 310-568 569-3,464 > 3,464 > 287
Power (1-β) 0.80 0.80 0.81 0.82 0.83 0.84 0.85
Number of clusters (N) 12 13 14