Table 3 Total number of clusters required according to different average sizes of the clusters and ICC (ES = 0.55, alpha = 0.05, power = 0.80)
| Â | Â | Average size of the clusters | ||
|---|---|---|---|---|
| Â | Â | 20 | 30 | 40 |
ICC | 0.02 | 10 | 8 | 8 |
0.03 | 12 | 10 | 10 | |
0.04 | 12 | 10 | 10 | |
0.05 | 14 | 12 | 10 | |