| VARIABLES | visit | visit | visit | visit | visit | visit |
| AQI | 0.0030*** | 0.0012 | 0.0030*** | 0.0049*** | −0.002 | −0.002 |
| AQI*Male AQI*Smoke | (0.001) 0.0027*** (0.000) | (0.002) 0.0045*** | (0.001) | (0.002) | (0.004) | (0.004) |
| AQI*Marriage |
| (0.001) | −0.0014** |
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| AQI*Race (Han) |
|
| (0.001) | −0.0031** |
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| AQI*Annual Income < 10,000 CNY |
|
|
| (0.001) | 0.0035* (0.002) |
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