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Demographics of Study Population
| Variable | Value |
|---|---|
| Age (yr) | 65.8 ± 12.8 |
| Sex (M/F) | 4/23 |
| Body mass index (kg/m2) | 25.2 ± 4.6 |
| Previous back surgery | 4 |
| Duration of pain (yr) | 1.60 ± 0.75 |
Values are presented as mean ± standard deviation or number only.
