From: International children's accelerometry database (ICAD): Design and methods
 | Number of valid days | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | ≥ 1 | ≥ 4 |
3 to 5 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 7.7 | 8.6 | 20.8 | 19.9 | 25.0 | 9.0 | 8.4 | 0.7 | 92.3 | 43.1 |
≥ 10 hrs | 12.8 | 11.9 | 24.3 | 21.2 | 21.1 | 5.0 | 3.4 | 0.3 | 87.2 | 29.8 |
≥ 12 hrs | 30.6 | 23.2 | 24.0 | 14.0 | 6.6 | 1.0 | 0.4 | 0.1 | 69.3 | 8.1 |
6 to 8 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 2.3 | 3.1 | 5.8 | 9.7 | 31.3 | 13.7 | 15.5 | 18.6 | 97.7 | 79.2 |
≥ 10 hrs | 4.4 | 5.0 | 10.3 | 14.2 | 29.5 | 10.6 | 11.7 | 14.2 | 95.6 | 66.1 |
≥ 12 hrs | 11.6 | 12.8 | 17.7 | 19.5 | 15.8 | 7.2 | 6.0 | 9.4 | 88.5 | 38.4 |
9 to 11 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 1.0 | 1.9 | 3.8 | 8.2 | 29.0 | 19.7 | 22.8 | 13.6 | 99.0 | 85.1 |
≥ 10 hrs | 1.9 | 3.2 | 6.5 | 12.8 | 29.5 | 19.7 | 17.9 | 8.6 | 98.1 | 75.6 |
≥ 12 hrs | 5.2 | 8.3 | 14.8 | 20.6 | 24.8 | 14.5 | 8.0 | 3.9 | 94.8 | 51.1 |
12 to14 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 2.6 | 3.2 | 4.3 | 7.8 | 11.8 | 18.3 | 24.8 | 27.1 | 97.4 | 82.0 |
≥ 10 hrs | 4.3 | 4.7 | 6.6 | 9.9 | 15.7 | 19.3 | 22.6 | 16.8 | 95.7 | 74.4 |
≥ 12 hrs | 7.6 | 8.3 | 10.3 | 14.5 | 19.2 | 18.8 | 15.2 | 6.2 | 92.4 | 59.3 |
15 to18 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 5.2 | 6.4 | 6.3 | 9.6 | 19.2 | 19.4 | 19.0 | 15.1 | 94.9 | 72.6 |
≥ 10 hrs | 8.0 | 9.0 | 9.0 | 12.9 | 20.5 | 15.3 | 16.3 | 9.1 | 92.0 | 61.1 |
≥ 12 hrs | 14.8 | 11.2 | 13.0 | 16.3 | 18.0 | 13.4 | 9.3 | 4.1 | 85.2 | 44.7 |
Overall | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
8 hrs | 3.8 | 4.6 | 8.2 | 11.0 | 23.3 | 16.0 | 18.1 | 15.0 | 96.3 | 72.4 |
10 hrs | 6.3 | 6.8 | 11.3 | 14.2 | 23.3 | 14.0 | 14.4 | 9.8 | 93.7 | 61.4 |
12 hrs | 14.0 | 12.8 | 16.0 | 17.0 | 16.9 | 11.0 | 7.8 | 4.7 | 86.0 | 40.3 |