Exploring extent of differences in PROM scores and health change with responder characteristics
| Patient characteristics | Mean SAQ-7 summary score | SAQ-7 summary score difference in health change, (SD) (n=259) | P value | |
| Baseline (Q1) score, (SD) (n=390) | Follow-up (QF) score, (SD) (n=260) | |||
| Age | ||||
| >70 | 80.3 (20.5) | 78.4 (20.2) | −1.88 (25.0) | 0.33 |
| 50–70 | 75.5 (21.0) | 78.7 (19.0) | 1.72 (22.3) | |
| <50 | 75.4 (21.8) | 78.9 (20.7) | 4.65 (25.5) | |
| Sex | ||||
| Male | 77.3 (20.7) | 80.4 (19.1) | 1.92 (23.2) | 0.2 |
| Female | 75.2 (22.4) | 72.5 (20.7) | −2.46 (24.4) | |
| SES | ||||
| 1 (least deprived) | 79.6 (20.0) | 83.4 (19.0) | 5.89 (20.4) | 0.23 |
| 2 | 80.0 (18.4) | 79.5 (18.6) | −0.96 (23.8) | |
| 3 | 78.5 (19.0) | 77.2 (19.6) | −1.73 (23.0) | |
| 4 | 72.6 (24.3) | 80.4 (21.5) | 5.10 (24.5) | |
| 5 (most deprived) | 75.1 (20.9) | 72.6 (18.8) | −2.85 (27.9) | |
| EQ-5D baseline categories | ||||
| 1 (≤0.65) | 59.1 (24.4) | 64.5 (23.0) | 6.3 (33.8) | 0.16 |
| 2 (0.66–0.85) | 74.7 (19.2) | 76.4 (18.9) | 2.4 (24.1) | |
| 3 (0.86–1) | 85.5 (15.9) | 84.1 (16.7) | −1.6 (19.6) | |