Table 1 Baseline characteristics of the sample (see [19])
Age (years) | mean (SD) | 49.7 (±8.3) |
|---|---|---|
Gender: men | n (%) | 143 (71%) |
Body mass index (km/m2) | mean (SD) | 28.9 (±5.3) |
Highest level of education “lower secondary school” | n (%) | 101 (50%) |
Duration of low back pain > 12 months | n (%) | 168 (84%) |
Intensity of pain during the last four weeks (min. = 1; max. = 6) | mean (SD) | 4.6 (±0.9) |