Table 3.
Prevalence of sleep disorders
| Sleep disorders | Age 0-2 years | Age 3-5 years | Age 6-12 years |
|---|---|---|---|
| Childhood Insomnia N (%) | |||
| Yes | 1586 ( 58.3%) | 789 ( 58.5%) | 797 ( 58.1%) |
| No | 1090 ( 40.1%) | 531 ( 39.4%) | 559 ( 40.7%) |
| Excessive somnolence N (%) | |||
| Never | 20 ( 58.8%) | 238 ( 65.9%) | 1398 ( 71.1%) |
| Less than once per week | 8 ( 23.5%) | 67 ( 18.6%) | 318 ( 16.2%) |
| Once or twice per week | 5 ( 14.7%) | 53 ( 14.7%) | 228 ( 11.6%) |
| All nights | 1 ( 2.9%) | 3 ( 0.8%) | 20 ( 1.0%) |
| Sleep attacks N (%) | |||
| Never | 30 ( 88.2%) | 327 ( 90.6%) | 1864 ( 94.8%) |
| Less than once per week | 3 ( 8.8%) | 30 ( 8.3%) | 82 ( 4.2%) |
| Once or twice per week | 1 ( 2.9%) | 4 ( 1.1%) | 19 ( 1.0%) |
| All nights | 0 ( 0.0%) | 0 ( 0.0%) | 0 ( 0.0%) |
| Circadian disorders - Anticipated phase N (%) | |||
| Never | 19 ( 55.9%) | 247 ( 68.4%) | 1574 ( 80.1%) |
| Less than once per week | 7 ( 20.6%) | 63 ( 17.5%) | 240 ( 12.2%) |
| Once or twice per week | 5 ( 14.7%) | 36 ( 10.0%) | 107 ( 5.4%) |
| All nights | 3 ( 8.8%) | 14 ( 3.9%) | 43 ( 2.2%) |
| Circadian disorders - Delayed phase N (%) | |||
| Never | 15 ( 44.1%) | 187 ( 51.8%) | 1022 ( 52.0%) |
| Less than once per week | 11 ( 32.4%) | 68 ( 18.8%) | 346 ( 17.6%) |
| Once or twice per week | 3 ( 8.8%) | 62 ( 17.2%) | 301 ( 15.3%) |
| All nights | 5 ( 14.7%) | 44 ( 12.2%) | 294 ( 15.0%) |
| Disorders of arousal - night-time fear N (%) | |||
| Never | 18 ( 52.9%) | 232 ( 64.3%) | 1570 ( 79.9%) |
| Less than once per week | 5 ( 14.7%) | 78 ( 21.6%) | 256 ( 13.0%) |
| Once or twice per week | 5 ( 14.7%) | 39 ( 10.8%) | 111 ( 5.6%) |
| All nights | 6 ( 17.6%) | 11 ( 3.0%) | 28 ( 1.4%) |
| Disorders of arousal - Confusional arousal N (%) | |||
| Never | 21 ( 61.8%) | 242 ( 67.0%) | 1689 ( 85.9%) |
| Less than once per week | 8 ( 23.5%) | 92 ( 25.5%) | 205 ( 10.4%) |
| Once or twice per week | 3 ( 8.8%) | 22 ( 6.1%) | 63 ( 3.2%) |
| All nights | 2 ( 5.9%) | 5 ( 1.4%) | 9 ( 0.5%) |
| Disorders of arousal - Consolation N (%) | |||
| Never | 17 ( 50.0%) | 233 ( 64.5%) | 1359 ( 69.1%) |
| Less than once per week | 6 ( 17.6%) | 50 ( 13.9%) | 94 ( 4.8%) |
| Once or twice per week | 4 ( 11.8%) | 15 ( 4.2%) | 35 ( 1.8%) |
| All nights | 0 ( 0.0%) | 4 ( 1.1%) | 18 ( 0.9%) |
| Sleep Apnea- Snoring N (%) | |||
| Never | 20 ( 58.8%) | 208 ( 57.6%) | 1210 ( 61.5%) |
| Less than once per week | 10 ( 29.4%) | 68 ( 18.8%) | 397 ( 20.2%) |
| Once or twice per week | 4 ( 11.8%) | 56 ( 15.5%) | 251 ( 12.8%) |
| All nights | 0 ( 0.0%) | 29 ( 8.0%) | 102 ( 5.2%) |
| Parasomnias - Sleep walking N (%) | |||
| Never | 33 ( 97.1%) | 336 ( 93.1%) | 1774 ( 90.2%) |
| Less than once per week | 1 ( 2.9%) | 18 ( 5.0%) | 147 ( 7.5%) |
| Once or twice per week | 0 ( 0.0%) | 5 ( 1.4%) | 37 ( 1.9%) |
| All nights | 0 ( 0.0%) | 1 ( 0.3%) | 5 ( 0.3%) |
| Sleep Anxiety N (%) | |||
| Never | 26 ( 76.5%) | 304 ( 84.2%) | 1527 ( 77.7%) |
| Less than once per week | 4 ( 11.8%) | 20 ( 5.5%) | 200 ( 10.2%) |
| Once or twice per week | 2 ( 5.9%) | 19 ( 5.3%) | 142 ( 7.2%) |
| All nights | 2 ( 5.9%) | 18 ( 5.0%) | 94 ( 4.8%) |
| Sleep Worries N (%) | |||
| Never | 25 ( 73.5%) | 252 ( 69.8%) | 1304 ( 66.3%) |
| Less than once per week | 6 ( 17.6%) | 63 ( 17.5%) | 379 ( 19.3%) |
| Once or twice per week | 3 ( 8.8%) | 29 ( 8.0%) | 201 ( 10.2%) |
| Always | 0 ( 0.0%) | 17 ( 4.7%) | 78 ( 4.0%) |
| Sleep Frustration N (%) | |||
| Never | 18 ( 52.9%) | 283 ( 78.4%) | 1363 ( 69.3%) |
| Less than once per week | 8 ( 23.5%) | 43 ( 11.9%) | 369 ( 18.8%) |
| Once or twice per week | 5 ( 14.7%) | 24 ( 6.6%) | 149 ( 7.6%) |
| All nights | 3 ( 8.8%) | 10 ( 2.8%) | 82 ( 4.2%) |