Table 3.
Hazard ratios of work-related factors and fatigue on FULL return to work
| Univariate (step 1) | Adjusted (step 2)a | Multivariate, adjusted (step 3)a | |||||
|---|---|---|---|---|---|---|---|
| HR | 95% CI | HR | 95% CI | HR | 95% CI | Χ2(p value)b | |
| Confounding factors | |||||||
| Low educational level (reference: medium or high) | 2.405 | 1.195–4.838 | – | – | – | – | – |
| Covariates | |||||||
| Low work ability | 0.435 | 0.244–0.778 | 0.420 | 0.229–0.770 | – | – | – |
| Higher job self-efficacy | 1.856 | 1.222–2.817 | 1.934 | 1.260–2.968 | 1.681c | 1.048–2.696 | 6.145 (.025) |
| Low value of work | 0.564 | 0.293–1.084 | 0.467 | 0.237–0.918 | 0.572 | 0.282–1.160 | 2.913 (.110) |
| Low fatigue | 2.335 | 1.279–4.261 | 2.254 | 1.230–4.130 | 1.802 | 0.937–3.467 | 3.951 (.074) |
HR hazard ratio, CI confidence interval
aAdjustments were stratification for time since first sick leave, and including education as predictor.
bImprovement of the model by adding the covariate mean of 20 imputations.
cHR of work ability was not statistically significant in this model