Table 1.
Mean sleep duration and prevalence of short and long sleep duration by age
| Age | N | Sleep Duration M (SD) | Sleep < 6 hours/night % | Sleep > 10 hours/night % |
|---|---|---|---|---|
| Total | 52,080 | 7.9 (1.9) | 1.1 | 2.9 |
| 13 | 1129 | 8.5 (1.3) | 1.1 | 4.5 |
| 14 | 2870 | 8.3 (1.3) | 1.5 | 4.0 |
| 15 | 3888 | 8.0 (1.3) | 2.7 | 2.8 |
| 16 | 4858 | 7.7 (1.4) | 4.7 | 2.9 |
| 17 | 5288 | 7.5 (1.4) | 6.2 | 2.1 |
| 18 | 5101 | 7.3 (1.5) | 8.5 | 1.6 |
| 19 | 2691 | 7.5 (1.7) | 9.0 | 5.0 |
| 20 | 1828 | 8.2 (2.2) | 7.6 | 15.0 |
| 21 | 1778 | 8.4 (2.4) | 8.8 | 20.1 |
| 22 | 2178 | 8.5 (2.6) | 9.9 | 23.6 |
| 23 | 2277 | 8.6 (2.3) | 6.4 | 25.0 |
| 24 | 2211 | 8.5 (2.2) | 8.3 | 23.0 |
| 25 | 1482 | 8.5 (2.5) | 8.4 | 25.3 |
| 26 | 1476 | 8.3 (2.1) | 6.1 | 14.1 |
| 27 | 1845 | 8.0 (1.9) | 9.1 | 8.9 |
| 28 | 2314 | 8.0 (2.1) | 9.7 | 7.1 |
| 29 | 2815 | 8.0 (2.0) | 8.7 | 8.0 |
| 30 | 2746 | 7.9 (2.1) | 11.2 | 8.2 |
| 31 | 2489 | 7.8 (2.0) | 10.2 | 5.9 |
| 32 | 816 | 7.7 (1.9) | 11.1 | 5.6 |