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. 2013 Sep 2;11:149. doi: 10.1186/1477-7525-11-149

Table 1.

Different sample sizes with variable cluster size and design effect for initial sample size of 445 (using the sample size produced from power calculation)

Cluster size Ρ
0.02 (n of cluster) 0.09 0.5
20
614 (31)
1205
4672
30
703 (23)
1606
6897
40
792 (20)
2006
9122
50 881 (18) 2407 11347

ρ–rate of homogeneity.