Table 2.
Associations between per 10 μg m−3 increase in CO, O3, NO2, SO2, PM2.5, and PM10 and depressive symptoms risk in single-pollutant models.
| Variables | Model 1 |
Model 2 |
Model 3 |
|||
|---|---|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | |
| PM2.5 | 1.131 (1.110, 1.153) | <0.001 | 1.132 (1.110, 1.154) | <0.001 | 1.130 (1.108, 1.153) | <0.001 |
| PM10 | 1.067 (1.056, 1.078) | <0.001 | 1.067 (1.056, 1.078) | <0.001 | 1.066 (1.055, 1.078) | <0.001 |
| NO2 | 1.004 (0.971, 1.038) | 0.812 | 1.000 (0.967, 1.034) | 0.983 | 1.019 (0.985, 1.054) | 0.281 |
| SO2 | 1.292 (1.255, 1.330) | <0.001 | 1.293 (1.256, 1.332) | <0.001 | 1.276 (1.238, 1.315) | <0.001 |
| CO | 1.007 (1.006, 1.008) | <0.001 | 1.007 (1.006, 1.008) | <0.001 | 1.007 (1.006, 1.008) | <0.001 |
| O3 | 0.730 (0.707, 0.754) | <0.001 | 0.725 (0.701, 0.749) | <0.001 | 0.732 (0.708, 0.757) | <0.001 |
Note.
1. Model 1: The crude model.
2. Model 2: The base model, adjusted for age at baseline and sex.
3. Model 3: The main model, further adjusted for educational level, marital status, employment status, urbanicity, cigarette smoking, alcohol drinking, and social activity.
4. OR, odds ratio. CI, confidence interval.