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Table 1 Sample characteristics of each disease group

From: Reporting of pain by people with chronic obstructive pulmonary disease (COPD): comparative results from the HUNT3 population-based survey

  COPD Arthritis Heart disease Diabetes No disease
N (%) n = 1199 (3.5) n = 8582 (25.3) n = 4109 (12.1) n = 1254 (3.7) n = 18,811 (55.4)
Age, mean years (SD) 61.6 (13.3) 61.2 (12.4) 68.9 (12.0) 63.4 (12.4) 51.6 (12.7)
Female sex (%) 51.7 70.4 36.8 48.6 48.8
Housing
Live with others (%) 75.3 79.3 76.0 77.4 88.3
 Missing observations, n 211 1356 592 185 3624
Occupation
With low educational requirements (%) 78.9 77.1 81.0 78.5 72.3
Smoking habits
Previous smoker (%) 18.6 37.4 32.4 41.4 47.2
Smoke daily (%) 44.8 31.5 47.7 38.8 29.7
Smoke occasionally (%) 31.1 20.4 14.1 14.6 15.9
Never smoke (%) 5.5 5.7 5.7 5.2 7.2
 Missing observations, n 30 491 166 41 354
Exercise
Never (%) 10.7 5.8 10.0 7.3 4.1
Less than once a week (%) 20.4 15.6 16.2 16.7 16.8
Once a week (%) 22.3 19.8 19.1 19.3 22.9
2–3 times a week (%) 32.3 38.1 33.8 36.5 39.7
Nearly every day (%) 14.2 20.7 20.9 20.2 16.5
 Missing observations, n 0 404 136 29 135
Comorbidities (%) 80.2 88.9 100 100
Hospital Anxiety and Depression Scale (HADS)
HADS anxiety score, mean (SD) 4.9 (13.8) 4.6 (3.6) 3.9 (3.3) 3.4 (3.1) 3.3 (2.8)
 Missing observations, n 266 1765 833 258 4089
HADS depression score, mean (SD) 4.4 (3.2) 3.9 (3.1) 4.3 (3.1) 3.7 (2.9) 2.8 (2.6)
 Missing observations 264 1687 762 242 4009
Chronic pain (%) 51.8 75.4 50.0 43.0 25.9
 Missing observations, n 60 600 218 62 435
Pain intensity
No pain (%) 19.5 8.3 23.5 32.1 42.0
Very mild (%) 9.7 6.1 9.8 10.2 13.2
Mild (%) 13.9 13.5 13.2 12.7 15.2
Moderate (%) 39.3 50.6 38.5 33.7 24.2
Severe (%) 15.8 19.4 13.3 10.1 4.8
Very severe (%) 1.8 1.9 1.7 1.2 0.5
 Missing observations, n 91 718 375 140 1403