Table 2 Sample size parameters
MVPA Difference (mins) | Power | N pupils (uninflated) | N pupils (inflated) | N Schools | N Schools when allowing for correlation between baseline and follow-up |
|---|---|---|---|---|---|
10 | 90 | 560 | 800 | 12 | 10 |
10 | 80 | 420 | 600 | 10 | 10 |
8 | 90 | 700 | 1000 | 16 | 12 |
8 | 80 | 560 | 800 | 12 | 12 |
6 | 90 | 980 | 1400 | 20* | 18 |
6 | 80 | 840 | 1200 | 18 | 16 |