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Demographics (mean ± SD) of cLBP and HCs.
| Characteristics | Dataset 1 | Dataset 2 | Dataset 3 | |||
|---|---|---|---|---|---|---|
| cLBP (n = 90) | HCs (n = 74) | cLBP (n = 30) | HCs (n = 30) | cLBP (n = 25) | HCs (n = 25) | |
| Age (years) | 34.5 ± 9.0 | 32.4 ± 8.4 | 37.2 ± 11.0 | 33.5 ± 7.2 | 48.0 ± 9.6 | 44.3 ± 12.2 |
| Gender (male/female) | 38/52 | 31/43 | 13/17 | 17/13 | 7/18 | 9/16 |
| Pain duration (years) | 6.9 ± 6.2 | NA | 5.9 ± 7.1 | NA | 6.1 ± 5.8 | NA |
