Variables | Coefficient | S.E | P | OR | 95% CI |
---|---|---|---|---|---|
Gender (Ref: Female) | |||||
 Male | − 0.14 | 0.04 | 0.01 | 0.87 | 0.80–0.94 |
Age group, y (Ref: ≤ 31) | |||||
 > 31 and ≤ 37 | − 0.05 | 0.06 | 0.47 | 0.96 | 0.85–1.08 |
 > 37 and ≤ 43 | − 0.25 | 0.08 | 0.01 | 0.78 | 0.67–0.91 |
 > 43 | − 0.45 | 0.09 |  < 0.01 | 0.64 | 0.54–0.76 |
Region (Ref: Western China) | |||||
 Eastern China | − 0.13 | 0.04 | 0.03 | 0.88 | 0.81–0.96 |
 Central China | − 0.02 | 0.05 | 0.72 | 0.98 | 0.90–1.08 |
Education level (Ref: Associate’s degree or vocational diploma) | |||||
 Bachelor degree | 0.44 | 0.08 |  < 0.01 | 1.55 | 1.32–1.82 |
 Master degree or higher | 0.49 | 0.09 |  < 0.01 | 1.63 | 1.36–1.95 |
Marital status (Ref: Married/widow/divorced) | |||||
 Unmarried | 0.04 | 0.06 | 0.43 | 1.04 | 0.94–1.16 |
Income level (Ref: Low) | |||||
 High | − 0.29 | 0.06 |  < 0.01 | 0.75 | 0.66–0.85 |
 Middle | − 0.21 | 0.04 |  < 0.01 | 0.81 | 0.75–0.87 |
Work tenure, y (Ref: ≤ 3) | |||||
 > 3 and ≤ 6 | 0.25 | 0.05 |  < 0.01 | 1.29 | 1.16–1.43 |
 > 6 and ≤ 11 | 0.34 | 0.06 |  < 0.01 | 1.41 | 1.26–1.58 |
 > 11 | 0.22 | 0.06 | 0.01 | 1.25 | 1.10–1.41 |
Contract status (Ref: Temporary) | |||||
 Permanent | 0.01 | 0.04 | 0.75 | 1.01 | 0.93–1.10 |
Professional title (Ref: Elementary or below) | |||||
 Intermediate | 0.14 | 0.06 | 0.02 | 1.15 | 1.03–1.29 |
 Senior | 0.29 | 0.08 |  < 0.01 | 1.34 | 1.14–1.56 |
Ownership (Ref: Non-governmental) | |||||
 Governmental | − 0.13 | 0.09 | 0.15 | 0.88 | 0.74–1.05 |
Level of hospital (Ref: Other) | |||||
 Three-grade level | − 0.58 | 0.14 |  < 0.01 | 0.56 | 0.43–0.74 |
 Two-grade level | − 0.34 | 0.14 | 0.02 | 0.71 | 0.54–0.94 |
Shift work (Ref: No) | |||||
 Yes | 0.32 | 0.06 |  < 0.001 | 1.37 | 1.22–1.55 |
Workplace violence (Ref: No) | |||||
 Yes | 0.58 | 0.06 |  < 0.01 | 1.78 | 1.57–2.02 |
Self-perceived health status (Ref: Good) | |||||
 Fair | 0.43 | 0.04 |  < 0.01 | 1.55 | 1.42–1.68 |
 Poor | 0.75 | 0.06 |  < 0.01 | 2.12 | 1.88–2.39 |
BMI (kg/m2) (Ref: < 25) | |||||
 ≥ 25 | − 0.07 | 0.04 | 0.09 | 0.94 | 0.87–1.01 |
History of hypertension (Ref: No) | |||||
 Yes | 0.04 | 0.05 | 0.52 | 1.04 | 0.93–1.15 |
History of diabetes (Ref: No) | |||||
 Yes | − 0.12 | 0.10 | 0.22 | 0.89 | 0.74–1.07 |
History of coronary heart disease (Ref: No) | |||||
 Yes | 0.27 | 0.11 | 0.02 | 1.29 | 1.04–1.61 |
Smoking status (Ref: Nonsmokers) | |||||
 Smokers | 0.05 | 0.05 | 0.27 | 1.06 | 0.96–1.16 |
Alcohol drinking (Ref: Nondrinkers) | |||||
 Drinkers | 0.08 | 0.05 | 0.09 | 1.08 | 0.99–1.18 |
Physical inactivity (Ref: No) | |||||
 Yes | − 0.05 | 0.04 | 0.24 | 0.95 | 0.88–1.03 |
Sleep quality (Ref: Good) | |||||
 Fair | 0.15 | 0.06 | 0.01 | 1.16 | 1.04–1.29 |
 Poor | 0.36 | 0.06 |  < 0.01 | 1.43 | 1.27–1.61 |
CES-D Scores (Ref: < 20) | |||||
 ≥ 20 | 1.02 | 0.04 |  < 0.01 | 2.77 | 2.56–3.00 |