Table 2 Performance variability of activity monitoring in the free living environment
Number of children | Variability of 2 days of monitoring (ICC) | Predicted number of days of monitoring required to achieve an ICC of | |||
|---|---|---|---|---|---|
0.7 | 0.8 | 0.9 | |||
>100 steps per 24 h period | 61 | 0.620 | 2.8 days | 4.9 days | 11 days |
≥10 h per 24 h period | 55 | 0.765 | 1.4 days | 2.5 days | 5.5 days |