Table 2 Univariate and multivariate analyses of risk factors for psychiatric disorders
Crude HR (95% CI) | p-value | Adjusted HR (95% CI) | p-value | |
|---|---|---|---|---|
IDA | 1.36 (1.31–1.41) | <  0.001 | 1.52 (1.45–1.59) | <  0.001 |
Age | ||||
 ≦ 50 | 1.00 | 1.00 | ||
  > 50 | 1.04 (1.01–1.08) | 0.017 | 1.04 (1.00–1.09) | 0.081 |
Gender | ||||
 Female | 1.00 | 1.00 | ||
 Male | 0.71 (0.68–0.74) | <  0.001 | 0.65 (0.62–0.68) | <  0.001 |
Income level | ||||
 Low | 1.00 | 1.00 | ||
 Intermediate | 0.99 (0.96–1.02) | 0.543 | 1.00 (0.96–1.03) | 0.846 |
 High | 0.87 (0.81–0.93) | <  0.001 | 0.90 (0.84–0.97) | 0.005 |
Comorbidity | ||||
 Hypertension | 1.20 (1.15–1.25) | <  0.001 | 1.13 (1.07–1.19) | <  0.001 |
 DM | 1.07 (1.02–1.13) | 0.013 | 0.88 (0.82–0.94) | <  0.001 |
 Dyslipidemia | 1.30 (1.24–1.37) | <  0.001 | 1.23 (1.16–1.30) | <  0.001 |
 Hyperthyroidism | 1.34 (1.21–1.49) | <  0.001 | 1.19 (1.07–1.33) | 0.001 |
 Hypothyroidism | 1.33 (1.11–1.60) | 0.002 | 1.11 (0.92–1.33) | 0.272 |
 COPD | 1.26 (1.20–1.32) | <  0.001 | 1.21 (1.16–1.27) | <  0.001 |
 Stroke | 1.11 (1.04–1.19) | 0.003 | 0.95 (0.88–1.03) | 0.205 |
 CAD | 1.27 (1.21–1.34) | <  0.001 | 1.13 (1.06–1.21) | <  0.001 |
 CKD | 1.05 (0.93–1.18) | 0.466 | 0.87 (0.77–0.98) | 0.024 |
 Cirrhosis | 0.87 (0.74–1.03) | 0.108 | 0.82 (0.70–0.97) | 0.023 |
 Iron supplementation | 1.14 (1.10–1.18) | <  0.001 | 0.82 (0.78–0.86) | <  0.001 |
Area | ||||
 Urban | 1.00 | 1.00 | ||
 Suburban | 0.98 (0.95–1.02) | 0.347 | 0.98 (0.94–1.02) | 0.263 |
 Rural | 0.92 (0.86–0.99) | 0.034 | 0.90 (0.84–0.97) | 0.009 |
 Remote area | 0.98 (0.90–1.08) | 0.689 | 0.96 (0.87–1.05) | 0.383 |