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Table 1 Sample size calculations: number of clusters per study arm

From: Integrating early stimulation and play at scale: study protocol for “MAHAY Mikolo”, a multi-arm cluster-randomized controlled trial

 

Autocorrelation coefficient

High (0.7)

Low (0.5)

ICC = 0

15

19

ICC = 0.2

18

23

ICC = 0.3

20

25