Table 1.
Unweighted descriptive characteristics of the participants (N = 70,130) at baseline.
| N | % | Mean | SD | |
|---|---|---|---|---|
| Questionnaire round | ||||
| 2012 | 19,709 | 28.1 | ||
| 2014 | 15,070 | 21.5 | ||
| 2016 | 18,228 | 26.0 | ||
| 2018 | 17,123 | 24.4 | ||
| Age (years) | 70,130 | 45.9 | 10.8 | |
| Sex | ||||
| Men | 33,292 | 47.5 | ||
| Women | 36,838 | 52.5 | ||
| Highest education attained | ||||
| Less than vocational or vocational education | 38,092 | 54.7 | ||
| Higher education | 31,591 | 45.3 | ||
| BMI (kg m−2) | 67,982 | 25.7 | 4.4 | |
| Physical activity during leisure (hours per week) | 68,394 | 5.2 | 3.3 | |
| Smoking | ||||
| Yes, daily | 9943 | 14.5 | ||
| Yes, once in a while | 3554 | 5.2 | ||
| Ex-smoker | 19,797 | 29.0 | ||
| No, never | 35,090 | 51.3 | ||
| Psychosocial work factors (0–100) | ||||
| Work-life balance | 69,884 | 46.2 | 16.3 | |
| Influence at work | 70,072 | 78.8 | 19.0 | |
| Pain frequency during the last 3 months | ||||
| Daily | 10,485 | 15.3 | ||
| Weekly | 12,067 | 17.6 | ||
| Monthly | 9667 | 14.1 | ||
| Seldomly | 21,095 | 30.7 | ||
| Never | 15,440 | 22.5 | ||
| Major Depression Inventory (0–50) | 68,497 | 8.1 | 7.3 | |
Values are percentage of participants or mean and standard deviations (SD).