Table 1. Demographic and clinical data of patients (N=375) with chronic low back pain.
Abbreviations: LBP: low back pain; SD: standard deviation; VAS: visual analog scale; ODI: Oswestry Disability Index. *Mean leg pain during last week in those who had leg pain.
| Patient Information | Female (n=240) | Male (n=135) | |
| Demographic data | Age (years), mean ± SD | 52 ±17 | 50 ± 16 |
| Height (cm), mean ± SD | 163 ± 7 | 179 ± 7 | |
| Weight (kg), mean ± SD | 74 ± 19 | 91 ± 20 | |
| Body mass index (kg/m2), mean ± SD | 28 ± 7 | 29 ± 6 | |
| Clinical data | Smoking, n (%) | 50 (21%) | 35 (26%) |
| ODI, mean ± SD | 39 ± 17 | 38 ± 19 | |
| LBP (VAS), mean ± SD | 64 ± 23 | 60 ± 25 | |
| LBP at night, n (%) | 194 (81%) | 95 (70%) | |
| LBP in the morning, n (%) | 212 (88%) | 115 (85%) | |
| LBP night or morning, n (%) | 225 (92%) | 124 (92%) | |
| Leg pain right, n (%) | 146 (61%) | 76 (56%) | |
| Leg pain right (VAS), mean ± SD* | 60 ± 25 | 56 ± 26 | |
| Leg pain left, n (%) | 140 (59%) | 67 (50%) | |
| Leg pain left (VAS), mean ± SD* | 58 ± 28 | 57 ± 26 | |
| Sleeping position | Side, n (%) | 209 (87%) | 118 (87%) |
| Supine, n (%) | 115 (48%) | 61 (45%) | |
| Prone, n (%) | 53 (22%) | 29 (21%) | |