Table 1. Demographic information.
| Characteristics | Mean (SD) or N (%) | Range |
|---|---|---|
| Gender (female) | 333 (65.9%) | |
| Age (years) | 52.4 (15.1) 20–80 | 20–80 |
| Height (cm) | 161.7 (8.7) | 137–191 |
| Weight (kg) | 59.5 (12.3) | 35–118 |
| Duration of pain (week) | 22.6 (57.4) | 1–528 |
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