Table 3 Factors related to recovery in respondents with persistent fatigue at baseline.
| Characteristics at baseline | OR (95% CI) | p Value* |
|---|---|---|
| Positive challenges in the job | 0.021 | |
| 1 (lowest quintile) | 1.00 | |
| 2 | 1.11 (0.70–1.77) | |
| 3 | 2.16 (1.27–3.69) | |
| 4 | 1.47 (0.83–2.61) | |
| 5 | 1.88 (1.06–3.35) | |
| Support from immediate superior | 0.006 | |
| 1 (lowest quintile) | 1.00 | |
| 2 | 0.84 (0.53–1.32) | |
| 3 | 0.45 (0.24–0.85) | |
| 4 | 0.85 (0.49–1.47) | |
| 5 | 1.63 (0.88–3.02) | |
| Feedback about quality of one's work | 0.032 | |
| Never or very seldom | 1.00 | |
| Rather seldom | 1.96 (1.19–3.22) | |
| Sometimes | 1.58 (0.98–2.56) | |
| Rather often | 1.63 (0.91–2.94) | |
| Very often or always | 0.75 (0.31–1.79) | |
| Working in a nursing home | 0.011 | |
| No | 1.00 | |
| Yes | 0.65 (0.46–0.91) | |
| Change of work or work tasks between baseline and follow up that resulted in reduced work pace | 0.014 | |
| No | 1.00 | |
| Yes | 3.50 (1.24–9.82) | |
| Change of work or work tasks between baseline and follow up that resulted in less heavy work | 0.036 | |
| No | 1.00 | |
| Yes | 2.40 (1.03–5.55) | |
| Long term health problems of any kind | 0.014 | |
| No | 1.00 | |
| Yes, but it does not bother me | 0.63 (0.28–1.41) | |
| Yes, it bothers me somewhat | 0.73 (0.49–1.09) | |
| Yes, it bothers me a lot | 0.49 (0.32–0.77) | |
| How did you feel during the day previous 14 days | <0.001 | |
| Usually fatigued | 1.00 | |
| Always fatigued | 0.34 (0.19–0.60) |
The final equation in a forward stepwise logistic regression analysis, with likelihood ratio test used as the criterion for determining variables to be removed from the model (n = 663).
*p Values from likelihood ratio test if term (overall variable) removed.
The covariates not retained in the final equation were age, gender, change of work or work tasks between baseline and follow up that resulted in more support, and change of work or work tasks between baseline and follow up that had consequences not specifically mentioned in the checklist.
The overall rate of correct classification of the dependent variable (predicted outcome compared with the observed outcome) was estimated as 63.7%. Hosmer and Lemeshow test: χ2 = 7.603; p = 0.473.