Table 1.
Baseline characteristics for the trial sample and nested qualitative study
| Total Trial sample (n = 1002) | |||
|---|---|---|---|
| Trial participants not interviewed (n = 970) | Nested qualitative study participants (n = 32) | Difference (95% CI) | |
| Age, years, mean (SD) | 57.7 (14.4) | 61.4 (12.8) | 3.8 (−1.3–8.8) |
| Female, n (%) | 570 (58.8) | 19 (59.4) | 0.6% (−1.7–1.8%) |
| Illness Behaviour, mean (SD) | 9.8 (3.5) | 10.3 (3.2) | 0.5 (−0.8–1.7) |
| Somatic symptoms, any, n (%) | 451 (46.5) | 16 (50.0) | 3.5% (−1.4–2.1%) |
| Sleep problems score, mean (SD) | 10.2 (4.6) | 10.2 (4.5) | 0.0 (−1.6–1.7) |
| EQ 5D, mean (SD) | 0.70 (0.19) | 0.67 (0.11) | −0.03 (− 0.09–0.04) |
| ICECAP, mean (SD) | 0.85 (0.15) | 0.83 (0.13) | −0.02 (− 0.08–0.03) |
| GHQ, > = 2, n (%) | 431 (44.9) | 15 (46.9) | 2.0% (− 15.6–20.0%) |
| Polysymptomatic distress, mean (SD) | 7.1 (3.5) | 8.2 (2.8) | 1.0 (− 0.2–2.3) |
CI confidence interval, SD standard deviation, IQR inter-quartile range