Table 1.
Baseline characteristics of the population at risk1 in HUNT-2
| Variables | |
|---|---|
| Number of participants |
19,271 |
| Age (mean [SD], missing = 0) |
45.8 [12.7] |
| Gender (% women, missing = 0) |
54.7 |
| Married (%, missing = 12) |
69.4 |
| Education ≥ 13 years (%, missing = 275) |
35.6 |
| Paid work (%, missing = 167) |
73.6 |
| High level of physical activity2 (%, missing = 4150) |
9.7 |
| BMI (mean [SD], missing = 35) |
26.0 [3.8] |
| Systolic BP (mean [SD], missing = 46) |
133.3 [18.4] |
| Daily use of tobacco (%, missing = 1857) |
27.2 |
| Alcohol overuse (cage score ≥ 1) (%, missing = 2287) |
16.2 |
| Total HADS-score (mean [SD], missing = 1978) |
6.6 [4.7] |
| GI-complaints3 (%, missing 517) | 48.5 |
1: Population at risk = Insomnia-free subjects (defined as subjects who have never or occasionally had sleep onset or terminal insomnia during the last month, and do not use sleep medication) in HUNT-2 who answered the questions about headache and musculoskeletal complaints.
2: High level of physical activity = Strenuous physical activity ≥ 3 hours / week.
3: GI-complaints: Some or much reflux symptoms and/ or diarrhea and /or constipation and / or nausea.