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 | 5.7 | 8.2 | 19.8 | 25.5 | 23.1 | 8.5 | 8.1 | 1.1 | 94.3 | 40.8 |
≥ 10 hrs | 10.4 | 12.7 | 23.1 | 25.9 | 18.5 | 5.4 | 3.8 | 0.2 | 89.6 | 28.0 |
≥ 12 hrs | 27.8 | 23.6 | 22.2 | 18.1 | 6.9 | 1.2 | 0.1 | 0.2 | 72.2 | 8.3 |
6 to 8 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 2.9 | 3.4 | 5.3 | 9.7 | 33.0 | 11.8 | 16.3 | 17.7 | 97.1 | 78.7 |
≥ 10 hrs | 4.9 | 5.7 | 8.1 | 15.6 | 29.3 | 10.2 | 13.1 | 13.1 | 95.1 | 65.7 |
≥ 12 hrs | 11.1 | 13.3 | 18.7 | 17.9 | 16.6 | 8.8 | 5.7 | 7.9 | 88.9 | 39.0 |
9 to 11 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 1.5 | 2.5 | 4.4 | 9.0 | 29.2 | 20.0 | 20.9 | 12.5 | 98.5 | 82.6 |
≥ 10 hrs | 2.7 | 3.9 | 6.4 | 12.9 | 29.6 | 18.9 | 16.9 | 8.6 | 97.3 | 74.0 |
≥ 12 hrs | 6.3 | 8.1 | 14.8 | 21.7 | 23.1 | 13.3 | 8.2 | 4.4 | 93.7 | 49.1 |
12 to14 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 3.7 | 2.9 | 3.6 | 6.2 | 11.5 | 19.2 | 18.9 | 34.0 | 96.3 | 83.6 |
≥ 10 hrs | 5.5 | 3.7 | 5.6 | 8.9 | 14.2 | 18.8 | 19.0 | 24.4 | 94.6 | 76.4 |
≥ 12 hrs | 8.9 | 7.2 | 9.2 | 12.5 | 19.0 | 17.5 | 15.8 | 9.9 | 91.1 | 62.2 |
15 to18 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
≥ 8 hrs | 6.0 | 5.6 | 6.7 | 10.9 | 19.1 | 17.0 | 18.5 | 16.2 | 94.0 | 70.7 |
≥ 10 hrs | 9.2 | 7.4 | 9.4 | 12.6 | 18.9 | 17.4 | 14.4 | 10.7 | 90.8 | 61.4 |
≥ 12 hrs | 14.8 | 11.0 | 12.4 | 16.2 | 16.6 | 13.3 | 9.8 | 5.8 | 85.2 | 45.5 |
Overall | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
8 hrs | 3.9 | 4.5 | 8.0 | 12.3 | 23.2 | 15.3 | 16.5 | 16.3 | 96.0 | 71.3 |
10 hrs | 6.6 | 6.7 | 10.5 | 15.2 | 22.1 | 14.2 | 13.4 | 11.4 | 93.5 | 61.1 |
12 hrs | 13.8 | 12.6 | 15.5 | 17.3 | 16.5 | 10.8 | 7.9 | 5.6 | 86.2 | 40.8 |