Summary scores of the biopsychosocial variables
| Variable, n=200 | Mean (SD) | Median (IQR) |
| RMDQ | 11.1 (6.5) | 10.5 (6.0, 17.0) |
| BPS | 6.6 (3.7) | 6.5 (4.0, 9.8) |
| WHODAS (total) | 22.8 (15.7) | 21.4 (9.9, 33.7) |
| Participation | 30.9 (21.4) | 28.1 (15.6, 46.9) |
| Mobility | 30.8 (22.5) | 30.0 (10.0, 45.0) |
| Life activities | 30.3 (22.4) | 25.0 (12.5, 46.9) |
| Cognition | 17.4 (19.7) | 12.5 (0.0, 29.2) |
| Getting along | 15.6 (17.9) | 10.0 (0.0, 25.0) |
| Self-care | 11.8 (14.6) | 6.3 (0.0, 18.8) |
| BS-11 | 5.3 (2.1) | 5.0 (4.0, 7.0) |
| HADS | ||
| Anxiety | 7.2 (4.5) | 7.0 (3.0, 11.0) |
| Depression | 7.5 (3.5) | 8.0 (5.3, 10.0) |
| CSQ | ||
| Control | 3.9 (1.3) | 4.0 (3.0, 5.0) |
| Decrease pain | 3.6 (1.3) | 3.5 (3.0, 4.0) |
| Praying/hoping | 27.8 (7.3) | 30.0 (25.0, 33.0) |
| Coping self-statements | 23.8 (7.0) | 25.0 (19.0, 29.0) |
| Diverting attention | 17.9 (9.3) | 20.0 (11.0, 25.0) |
| Increased behavioural activities | 16.9 (8.1) | 19.0 (10.0, 23.8) |
| Ignoring sensations | 16.6 (7.5) | 18.0 (10.0, 22.0) |
| Reinterpreting pain sensation | 15.1 (8.9) | 17.0 (7.0, 22.0) |
| Catastrosphising | 13.6 (8.2) | 13.0 (7.0, 20.0) |
| MSPSS | 62.4 (13.3) | 64.0 (52.0, 72.0) |
| ORFQ | 4.6 (4.7) | 3.0 (2.0, 6.0) |
| BIPQ | 37.5 (8.7) | 38.0 (32.0, 44.0) |
| FABQ | 39.2 (15.9) | 43.0 (23.3, 53.0) |
BIPQ, Brief Illness Perception Questionnaire; BPS, Back Performance Scale; BS-11, 11-point box scale; CSQ, Coping Strategies Questionnaire; FABQ, Fear Avoidance Beliefs Questionnaire; HADS, Hospital Anxiety and Depression Scale; MSPSS, Multidimensional Scale of Perceived Social Support; RMDQ, Roland Morris Disability Questionnaire; WHODAS, WHO Disability Assessment Schedule.