Table 1 Baseline characteristics of the study population
Biopsychosocial factors | n/N | Percent |
|---|---|---|
Sociodemography | ||
 Female | 169/212 | 80 |
 Age ≥ 36 years old | 154/212 | 73 |
 Higher education | 88/212 | 42 |
 Poor economy | 43/212 | 20 |
Work and benefits | ||
 Employed | 127/212 | 60 |
 Work assessment allowance (type of benefit) | 120/212 | 57 |
 Partial sick leave | 76/212 | 36 |
 Physically demanding job | 99/190 | 52 |
Psychological (attitudes, beliefs or behaviors) | ||
 Low expectation of return to work | 67/189 | 35 |
 High psychological flexibility | 44/193 | 23 |
 High work self-efficacy | 129/163 | 79 |
Health | ||
 Chronic pain by self-report | 159/211 | 75 |
 Chronic fatigue by self-report | 166/211 | 79 |
 Mental distress by self- report | 131/211 | 62 |
 Mental disorder as main diagnosis on sickness certificate | 73/197 | 37 |
 Mental disorder confirmed by interdisciplinary assessment | 45/211 | 21 |
 Sleep disturbance by self-report | 76/212 | 36 |
Functioning | ||
 Role limitations because of emotional problems | 124/210 | 59 |
 Role limitations because of physical health | 144/212 | 68 |