| Â | Values to be analyzed | Depressive symptom |
|---|
| Â | ORa | 95%CI | p-value |
|---|
Model 1 | WT | Â | Â | Â |
≤40 h/week | – | – | – |
41–50 h/week | 1.32 | 1.11–1.56 | < 0.001 |
51–60 h/week | 1.74 | 1.35–2.24 | < 0.001 |
> 60 h/week | 2.54 | 1.90–3.39 | < 0.001 |
Insomnia | Â | Â | Â |
Negative | – | – |  |
Positive | 2.36 | 2.04–2.74 | < 0.001 |
Model 2 | WT × Insomnia | 1.35 | 1.15–1.59 | < 0.001 |
Nagelkerke R2 | 0.171 | Â | Â |
- Note: Model 1: work time and insomnia were simultaneously introduced into the regression adjusted by sex, age, education level, marital status, income, exercise frequency, dietary habits, and smoking status. Model 2 further introduced an interaction value of WT × insomnia based on Model 1; only the interaction coefficient is shown in Table 2. WT of interaction value in model 2 was introduced as a continuous variable. WT work time; a: p < 0.05; CI confident interval; ORa odds ratio adjusted by general characteristics such as sex, age, education level, marital status, income, exercise frequency, dietary habits, and smoking status
