Table 2.
Sociodemographics and disease-specific characteristics of study participants
| Variable | Healthy participants n = 126 | Patients with chronic low back pain n = 32 |
|---|---|---|
| Sex (% female) | 54% | 59% |
| Age in years (mean, SD) | 29.95 (9.25) | 41.03 (12.85) |
| Income group (%) | ||
| <1000 €/month | 10% | 16% |
| 1000–2000 €/month | 2% | 13% |
| 2000–3000 €/month | 56% | 48% |
| 3000–4000 €/month | 30% | 19% |
| >4000 €/month | 2% | 3% |
| Having idea of what low back pain is (%) | 94% | 100% |
| Friends/family members with low back pain (%) | 62% | 66% |
| Family history of LBP (positive, %) | - | 56% |
| Disease duration in years (mean, SD) | - | 15.48 (9.48) |
| Roland Morris disability index | ||
| light (%) | - | 72% |
| moderate (%) | - | 25% |
| severe (%) | - | 3% |
| Degree health affected productivity while working (0 to 1) (WPAI) (mean, SD) | - | 0.18 (0.18) |
| Degree health affected regular activities (0 to 1) (WPAI) (mean, SD) | - | 0.28 (0.24) |
| Depressive Symptoms (CES-D) (mean, SD) |
- | 12.06 (7.52) |
| HU own disease (0 to 1) (mean, SD) | - | 0.93 (0.13) |
| Pain own disease (100 mm VAS) (mean, SD) | - | 22.25 (21.60) |
SD Standard Deviation, WPAI Work Productivity and Activity Impairment Questionnaire, CES-D Center for Epidemiological Studies Depression Scale, VAS Visual Analogue Scale, − not applicable