Results from the Cox regression analyses regarding first return to regular work
| Median number of days (IQR) | Hazard ratios for return to regular work (95% confidence interval)* | ||||
|---|---|---|---|---|---|
| Prior workplace intervention | |||||
| Yes | No | ||||
| *Adjusted for effect of workplace intervention, time of randomisation, and gender. | |||||
| †Also adjusted for delay in referral. | |||||
| Intention-to-treat analysis (n = 112) | |||||
| Graded activity (n = 55) | 139.0 (69.0) | 0.52 (0.32–0.86) | 0.66 (0.40–1.10)† | 0.39 (0.19–0.81) | 0.86 (0.40–1.84) |
| Usual care (n = 57) | 111.0 (76.0) | ||||
| Per protocol analysis (n = 88) | |||||
| Graded activity (n = 36) | 143.5 (61.3) | 0.57 (0.33–0.98) | 0.68 (0.38–1.20)† | 0.32 (0.14–0.71) | 1.02 (0.44–2.38) |
| Usual care (n = 53) | 114.0 (77.5) | ||||