Frequency of sleep disturbances among 3372 adolescents
| Variable | No. (%) | |||
|---|---|---|---|---|
| Not during the past month | Less than once per week | Once or twice per week | Three or more times per week | |
| Woke up during night/early morning | 1178 (35.9) | 939 (28.6) | 678 (20.7) | 485 (14.8) |
| Could not fall asleep within 30 min | 1403 (42.8) | 782 (23.8) | 552 (16.8) | 543 (16.6) |
| Felt too hot | 1739 (53.3) | 809 (24.8) | 483 (14.8) | 229 (7.0) |
| Felt too cold | 1842 (56.5) | 773 (23.7) | 432 (13.0) | 225 (6.9) |
| Got up to use the bathroom | 1865 (56.7) | 821 (25.0) | 409 (12.4) | 192 (5.8) |
| Had bad dreams | 2245 (68.8) | 617 (18.9) | 263 (8.1) | 139 (4.3) |
| Legs twitched or jerked | 2234 (75.0) | 364 (12.2) | 203 (6.8) | 176 (5.9) |
| Had pain | 2485 (76.5) | 477 (14.7) | 187 (5.8) | 98 (3.0) |
| Coughed/snored loudly (self-reported) | 2662 (81.8) | 339 (10.4) | 139 (4.3) | 113 (3.5) |
| Snored loudly (reported by parents) | 2550 (84.6) | 232 (7.7) | 105 (3.5) | 126 (4.2) |
| Could not breathe comfortably | 2781 (85.4) | 269 (8.3) | 137 (4.2) | 69 (2.1) |
| Restlessness while asleep | 2395 (89.2) | 116 (4.3) | 82 (3.1) | 93 (3.5) |
| Disoriented or confused | 2658 (89.6) | 194 (6.5) | 71 (2.4) | 42 (1.4) |
| Disturbed sleep for other reasons | 2193 (90.5) | 57 (2.4) | 70 (2.9) | 102 (4.2) |
| Long pause between breath | 2758 (92.7) | 128 (4.3) | 48 (1.6) | 42 (1.4) |