Table 1.
Characteristics of the study population, n = 228
| Mean age in years (SD) n | 42.2 (11.0) | 228 |
| Gender female %, n | 53 | 120 |
| Mean Body-Mass-Index in kg/m2 (SD) n | 26.7 (5.0) | 225 |
| Employment %, n | ||
| Not working | 4.9 | 11 |
| Working ≥ 35 hours | 62.9 | 141 |
| Working 15 to 34 hours | 25.0 | 56 |
| Working < 15 hours | 2.7 | 6 |
| Parental or other leave | 3.1 | 7 |
| Trainee/retrainee/prentice | 1.3 | 3 |
| Total | 100 | 224 |
| Mean Pain intensity (SD) n | 4.3 (1.7) | 225 |
| Mean Disability (RMDQ; SD) n | 9.9 (5.2) | 204 |
| Duration of current episode %, n | ||
| <6 weeks | 60.3 | 135 |
| 6 to 12 weeks | 8.9 | 20 |
| >12 weeks to 0.5 year | 5.8 | 13 |
| >0.5 year | 25.0 | 56 |
| Total | 100 | 224 |
| Sick leave within the previous 12 weeks %, na | 13.6 | 31 |
| Mean HADS-D (depression; SD) n | 4.7 (3.5) | 224 |
| Mean PCS (SD) n | 16.7 (10.5) | 227 |
| Mean TSK (SD) n | 32.9 (6.7) | 228 |
| Mean STarT-G total (SD) n | 3.9 (2.0) | 205 |
| Mean STarT-G subscale (SD) n | 2.0 (1.4) | 209 |
| STarT-G risk group %, n | ||
| Low risk | 38.6 | 80 |
| Medium risk | 43.5 | 90 |
| High risk | 17.9 | 37 |
| Total | 100 | 207 |
HADS-D Hospital Anxiety and Depression Scale (Depression), PCS Pain Catastrophizing Scale, RMDQ Roland Morris Disability Questionnaire, TSK Tampa Scale of Kinesiophobia
aMedically certified sick within twelve weeks before t0