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Table 2 Key sample size assumptions

From: Action to Support Practices Implement Research Evidence (ASPIRE): protocol for a cluster-randomised evaluation of adaptable implementation packages targeting ‘high impact’ clinical practice recommendations in general practice

 

Atrial fibrillation

Blood pressure control

Risky prescribing

Diabetes control

Mean number of patients per practice (cluster size)

55

800

420

280

Coefficient of variation (CV) of cluster size

0.79

0.67

0.65

0.6

Intra-cluster correlation coefficient (ICC)

0.06

0.06

0.03

0.06

Control group adherence

0.6

0.72

0.89

0.43