Dependent variable | Overall cohort | SES 1 | SES 2 | SES 3 | p-value* |
---|---|---|---|---|---|
 | N = 316 | N = 85 | N = 87 | N = 144 |  |
Pain – mean (SD) | 41.0 (18.2) | 46.2 (20.2) | 42.4 (18.4) | 37.2 (15.9) | <0.01 |
Functional status- mean (SD) | 41.8 (17.1) | 46.6 (17.8) | 42.8 (17.5) | 38.4 (15.8) | <0.01 |
Pain catastrophizing- mean (SD) | 12.0 (10.7) | 13.8 (12.1) | 13.3 (11.5) | 10.2 (8.9) | 0.01 |