Table 3 Logistic regression analysis of regarding factors in the previous one month on depressive symptoms
| Â | Men | Women | ||||||
|---|---|---|---|---|---|---|---|---|
Variables | Crude | Adjusted | Crude | Adjusted | ||||
| Â | OR | (95% CI) | ORa | (95% CI) | OR | (95% CI) | ORa | (95% CI) |
The number of days of off-duty per month | ||||||||
   None | 2.13 | (1.42 to 3.19) | 1.62 | (1.05 to 2.52) | 3.30 | (1.64 to 6.64) | 2.39 | (1.10 to 5.19) |
   1-4 days | 1.30 | (0.96 to 1.75) | 1.10 | (0.80 to 1.51) | 1.02 | (0.57 to 1.83) | 0.75 | (0.40 to 1.42) |
   5-7 days | 1.00 |  | 1.00 |  | 1.00 |  | 1.00 |  |
   8 days or more | 0.52 | (0.32 to 0.86) | 0.53 | (0.31 to 0.90) | 0.81 | (0.44 to 1.51) | 1.08 | (0.55 to 2.12) |
The number of days of on-call per month | ||||||||
   None | 1.00 |  | 1.00 |  | 1.00 |  | 1.00 |  |
   1-4 days | 1.36 | (0.95 to 1.95) | 1.27 | (0.88 to 1.84) | 1.53 | (0.84 to 2.79) | 1.55 | (0.80 to 3.00) |
   5-7 days | 1.91 | (1.28 to 2.84) | 1.75 | (1.15 to 2.64) | 1.41 | (0.57 to 3.49) | 1.14 | (0.43 to 3.06) |
   8 days or more | 2.19 | (1.58 to 3.04) | 1.77 | (1.24 to 2.52) | 2.41 | (1.41 to 4.1) | 1.80 | (0.98 to 3.28) |
Average sleeping hours for days not working overnight | ||||||||
   Less than 5 hours | 2.79 | (1.96 to 3.95) | 2.70 | (1.82 to 4.03) | 2.65 | (1.47 to 4.78) | 2.38 | (1.11 to 5.10) |
   5 to less than 6 hours | 1.33 | (0.98 to 1.81) | 1.20 | (0.88 to 1.65) | 1.62 | (0.96 to 2.74) | 1.54 | (0.89 to 2.67) |
   6 to less than 7 hours | 1.00 |  | 1.00 |  | 1.00 |  | 1.00 |  |
   7 hours or more | 1.10 | (0.71 to 1.70) | 1.32 | (0.84 to 2.08) | 1.12 | (0.49 to 2.54) | 1.08 | (0.46 to 2.49) |
The number of days of overnight work per month | ||||||||
   None | 1.00 |  | 1.00 |  | 1.00 |  | 1.00 |  |
   Once | 1.21 | (0.75 to 1.95) | 1.00 | (0.60 to 1.65) | 1.06 | (0.40 to 2.79) | 0.84 | (0.29 to 2.40) |
   2 to 3 times | 1.47 | (1.04 to 2.08) | 1.14 | (0.74 to 1.67) | 2.06 | (1.17 to 3.62) | 1.65 | (0.86 to 3.17) |
   4 to 5 times | 1.33 | (0.92 to 1.94) | 1.11 | (0.74 to 1.68) | 1.31 | (0.63 to 2.71) | 1.21 | (0.53 to 2.77) |
   6 times or more | 1.77 | (1.19 to 2.64) | 1.33 | (0.86 to 2.07) | 2.37 | (1.15 to 4.89) | 1.90 | (0.82 to 4.42) |