ICC of AD and accelerometer, and no. days to reach an ICC of 0.75 and 0.90.
| Activity | ICC (95% CI) | No. Days Needed to Reach: | |
|---|---|---|---|
| ICC 0.75 | ICC 0.90 | ||
| AD | |||
| PAL | 0.21 (0.12–0.32) | 11.4 | 34.3 |
| Rest | 0.32 (0.23–0.44) | 6.3 | 18.8 |
| LPA | 0.36 (0.26–0.48) | 5.3 | 16.1 |
| MVPA | 0.20 (0.11–0.31) | 12.3 | 36.0 |
| Accelerometer | |||
| PAL | 0.33 (0.23–0.47) | 6.2 | 18.6 |
| Rest | 0.37 (0.27–0.49) | 5.1 | 15.1 |
| LPA | 0.37 (0.27–0.49) | 5.2 | 15.5 |
| MVPA | 0.39 (0.29–0.51) | 4.6 | 13.9 |
ICC: intraclass correlation coefficient; AD: activity diary; PAL: physical activity level; LPA: light physical activity; MVPA: moderate to vigorous physical activity.