Table 1.
Sleep problems, with sample questions | N of observations | Weighted prevalence: % | 95% Confidence Interval |
---|---|---|---|
1. Difficulty falling asleep: “Is it hard to fall asleep when you want to? How long does it take?” | 468 | 7.0 | 6.4, 9.3 |
2. Waking in the middle of the night: “Once you're off to sleep, do you wake up again in the night? Can you get back to sleep again easily?” | 145 | 2.2 | 1.4, 2.9 |
3. Early morning awakening: “Do you wake up early in the morning and can't go back to sleep?” | 201 | 2.9 | 2.2, 3.6 |
4. Hypersomnia: “Do you feel sleepy during the day? More than most people?” | 163 | 2.1 | 1.5, 2.6 |
5. Nightmares: “Do you have bad dreams or nightmares? Do they wake you?” | 396 | 5.6 | 4.5, 6.7 |
6. Restless sleep: “Do you sleep soundly/ Do you toss and turn?” | 714 | 10.8 | 9.2, 12.5 |
7. Inadequately rested by sleep: “Are you fairly well rested when you get up?” | 123 | 2.6 | 1.8, 3.4 |
8. Tiredness: “Have you been feeling especially tired or weary? How much of the time have you felt like that?” | 135 | 2.6 | 1.8, 3.4 |
9. Fatigability, exhaustion: “Do you feel exhausted by things that would have been no problem before?” | 118 | 2.0 | 1.3, 2.6 |
10. Somnambulism (parent report): “Does s/he ever walk in his/her sleep?” | 236 | 2.9 | 2.0, 3.7 |
11. Night terrors (parent report): “Does s/he ever seem to be having a terrible dream, but doesn't wake up?” | 156 | 1.8 | 1.2, 2.4 |
No sleep problems in past 3 months | 4,669 | 73.9 | 71.6, 76.2 |
1 or more sleep problem | 1,864 | 26.1 | 23.8, 28.4 |
2 or more sleep problems | 906 | 12.4 | 11.1, 14.5 |
Missing sleep data: N = 139.