Table 3.
Logistic regressions
| Variable | Category | Non-adjusted (simple regressions) | Fully adjusted (complete model) n = 411 | |||||
|---|---|---|---|---|---|---|---|---|
| n | OR | CI 95 % | P | OR | CI 95 % | P | ||
| General health at admission | NA | 526 | 1.66 | 1.26–2.18 | <0.001 | 1.40 | 0.89–2.21 | 0.149 |
| General health improvement during stay | NA | 517 | 1.19 | 1.02–1.37 | 0.022 | 1.14 | 0.98–1.33 | 0.082 |
| Pain at admission | NA | 511 | 0.62 | 0.60–0.64 | <0.001 | 0.61 | 0.57–0.65 | <0.001 |
| Pain decrease during stay | NA | 490 | 1.37 | 1.35–1.39 | <0.001 | 1.69 | 1.47–2.04 | <0.001 |
| HADS anxiety | NA | 526 | 0.64 | 0.49–0.83 | 0.001 | 0.94 | 0.86–1.02 | 0.139 |
| HADS depression | NA | 525 | 0.60 | 0.51–0.71 | <0.001 | 1.06 | 0.83–1.36 | 0.634 |
| SF-36 physical summary score | NA | 503 | 1.48 | 1.15–1.92 | 0.002 | 1.16 | 0.75–1.76 | 0.498 |
| SF-36 mental summary score | NA | 503 | 1.41 | 1.40–1.42 | <0.001 | 1.15 | 0.96–1.37 | 0.123 |
| IES-R avoidance | NA | 517 | 0.69 | 0.51–0.92 | 0.011 | 0.69 | 0.61–0.79 | <0.001 |
| IES-R intrusion | NA | 517 | 0.70 | 0.52–0.94 | 0.016 | 1.05 | 0.60–1.84 | 0.865 |
| IES-R hyper-arousal | NA | 513 | 0.70 | 0.55–0.87 | 0.002 | 1.32 | 0.76–1.68 | 0.535 |
| Perceived severity of injury | Severe or very severe | 312 | 1 | 1 | ||||
| Very light to moderate | 219 | 1.97 | 1.11–3.49 | 0.020 | 1.08 | 1.03–1.14 | 0.002 | |
| Expected outcome | Deterioration or no improvement | 146 | 1 | 1 | ||||
| Soon recovered or getting better | 385 | 2.41 | 1.86–3.13 | <0.001 | 1.14 | 0.78–1.66 | 0.492 | |
OR for continuous variables refer to one-SD increments
In the fully adjusted model, predictors are adjusted for each other and for the confounding variables (for the final model see Fig. 2)