| Variable | Explanation | Mean | Min | Max | S.D. |
| Panel (a): Hospital visit |
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| Hospital Visits | Whether hospital visits happened in last month | 0.20 | 0 | 1 | 0.40 |
| Panel (b): AQI and pollutants |
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| AQI | Annual average AQI | 69.78 | 9.43 | 212.60 | 27.87 |
| SO2 | Annual average of SO2 (µg/m3) | 26.98 | 6.97 | 109.29 | 18.20 |
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| NO2 | Annual average of NO2 (µg/m3) | 38.10 | 14.10 | 87.32 | 12.74 |
| CO | Annual average of CO (µg/m3) | 1.12 | 0.50 | 5.05 | 0.60 |
| O3 | Annual average of O3 (µg/m3) | 121.44 | 47.67 | 194.14 | 35.50 |
| PM2.5 | Annual average of PM2.5 (µg/m3) | 59.51 | 14 | 185.40 | 34.42 |
| PM10 | Annual average of PM10 (µg/m3) | 101.00 | 32.19 | 353.45 | 56.09 |
| Panel (c): Individual characteristics |
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| Age | Respondent’s age | 59.84 | 29 | 97 | 9.81 |
| Income | Annual income (CNY) | 15,109.41 | 0 | 230,000 | 19,562.45 |
| Male | Gender (1: Male) | 0.48 | 0 | 1 | 0.50 |
| Race | Han (1) or minorities (0) | 0.963 | 0 | 1 | 0.19 |
| Marriage | Married (1) or other (0) | 0.842 | 0 | 1 | 0.365 |
| Education | Education statusa | 3.77 | 1 | 10 | 1.95 |
| Smoking | Smoking status (1: Smoking) | 0.293 | 0 | 1 | 0.455 |
| Urban | Living area (1: Living in the urban) | 0.489 | 0 | 1 | 0.499 |