Table 2.
Sleep disorders of NHANES 2005–2006 participants
| Characteristics | Total | Male | Female | P value | |||
|---|---|---|---|---|---|---|---|
| N | Weighted | N | Weighted | N | Weighted | ||
| Sleep duration | 0.26 | ||||||
| ≤ 6 h/night, % | 965 | 34.6 (1.2) | 535 | 55.6 (2.1) | 430 | 44.4 (2.1) | |
| 7–8 h/night, % | 1488 | 59.0 (1.2) | 790 | 51.3 (1.2) | 698 | 48.7 (1.2) | |
| ≥ 9 h/night, % | 192 | 6.3 (0.4) | 88 | 40.9 (4.4) | 104 | 59.1 (4.4) | |
| Sleep onset latency time | 0.32 | ||||||
| ≤ 5 min, % | 781 | 31.2 (1.7) | 455 | 56.9 (2.2) | 326 | 43.1 (2.2) | |
| 5–30 min, % | 1419 | 54.0 (1.7) | 738 | 50.6 (1.4) | 681 | 49.4 (1.4) | |
| > 30 min, % | 436 | 14.7 (0.8) | 215 | 47.7 (2.0) | 221 | 52.3 (2.0) | |
| Sleep problems | < 0.001 | ||||||
| Yes, % | 1072 | 42.2 (0.9) | 513 | 46.9 (1.4) | 559 | 53.1 (1.4) | |
| No, % | 1576 | 57.8 (0.9) | 900 | 55.9 (1.4) | 676 | 44.1 (1.4) | |
| OSA symptoms | 0.001 | ||||||
| Yes, % | 1323 | 51.8 (1.5) | 800 | 60.1 (1.5) | 523 | 39.9 (1.5) | |
| No, % | 1325 | 48.2 (1.5) | 613 | 43.5 (1.3) | 712 | 56.5 (1.3) | |
| Day sleepiness | < 0.001 | ||||||
| Yes, % | 710 | 27.3 (1.0) | 303 | 43.5 (1.8) | 407 | 56.5 (1.8) | |
| No, % | 1938 | 72.7 (1.0) | 1110 | 55.3 (1.2) | 828 | 44.7 (1.2) | |
OSA: obstructive sleep apnoea