Table 3
Baseline self-reported psychological and health characteristics of participants
| Psychological and other health measures (Denominatora) | n = 609 |
|---|---|
| HADs anxiety subscale (607) | |
| Normal | 316 (52.1) |
| Mild/possible case | 120 (19.8) |
| Probable/moderate/severe case | 171 (28.2) |
| HADs depression subscale (609) | |
| Normal | 392 (64.4) |
| Mild/possible case | 119 (19.5) |
| Probable/moderate/severe case | 98 (16.1) |
| Pain self-efficacy score (593), mean (SD) | 34.1 (14.6) |
| Illness perceptions questionnaire-short form (IPQ-R) | |
| Timeline-‘back/leg pain will last for a long time (agree or strongly agree) (609) | 345 (56.7) |
| Personal control-‘what I do can determine whether back/leg pain gets better (agree or strongly agree) (605) | 367 (60.7) |
| Identity score (0–7) (584), mean (SD) | 5.9 (1.3) |
| General Health (608) | |
| Excellent/very good | 146 (24.0) |
| Good | 241 (39.5) |
| Fair | 172 (28.3) |
| Poor | 50 (8.2) |
| Co-morbidities b (609) | |
| None | 371 (60.9) |
| One other health problem | 158 (25.9) |
| Two or more other health problems | 80 (13.1) |
| EQ—5D—3L summary index (590) | 0.44 (0.32) |
aDenominator varies for some participants due to missing data or not applicable case
bThe health problems include chest problems, heart problems, raised blood pressure, diabetes, and circulation problems in the leg