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Table 1 Baseline characteristics of the population at risk 1 in HUNT-2

From: The impact of headache and chronic musculoskeletal complaints on the risk of insomnia: longitudinal data from the Nord-Trøndelag health study

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. 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. 2: High level of physical activity = Strenuous physical activity ≥ 3 hours / week.
  3. 3: GI-complaints: Some or much reflux symptoms and/ or diarrhea and /or constipation and / or nausea.