Table 3.
Estimated PM2.5 reduction levels and avoided mortality due to PM2.5 exposure in January to April of 2020 compared to same month each year from 2016 to 2019.
| Model 1 (a) | Model 2 (b) | Model 3 (c) | Model 4 (d) | |
|---|---|---|---|---|
| Reduction of PM2.5 by comparing 2016–2019 and 2020 (μg/m3) | −5.6 (−9.0, −2.3) | −4.1 (−7.2, −0.9) | −15.1 (−27.1, −3.2) | −11.2 (−14.3, −8.2) |
| Avoided cause-specific deaths | ||||
| Estimation using RRs from MCC study | ||||
| Non-accidental mortality | 51.3 (44.6, 58.1) | 37.6 (32.6, 42.5) | 137.9 (119.8, 156) | 102.5 (89.0, 115.9) |
| Cardiovascular disease mortality | 9.6 (7.8, 11.5) | 7 (5.7, 8.4) | 25.7 (21.0, 30.8) | 19.1 (15.6, 22.9) |
| Respiratory disease mortality | 6.5 (4.6, 8.3) | 4.7 (3.4, 6.1) | 17.3 (12.5, 22.2) | 12.9 (9.2, 16.5) |
| Estimation using RRs from Seoul City study | ||||
| Non-accidental mortality | 25 (0.8, 49.8) | 18.3 (0.6, 36.5) | 67.2 (2.0, 133.9) | 49.9 (1.5, 99.5) |
| Cardiovascular disease mortality | 13.2 (2.1, 24.3) | 9.7 (1.5, 17.8) | 35.4 (5.6, 65.2) | 26.3 (4.2, 48.5) |
| Respiratory disease mortality | 15.3 (4.8, 25.8) | 11.2 (3.5, 18.9) | 41 (12.9, 68.6) | 30.5 (9.6, 51.2) |
(a) Model 1 estimated by simple comparison of mean value, (b) Model 2 adjusting for daily average temperature, relative humidity, and wind speed, (c) Model 3 adjusting for daily average temperature, relative humidity, wind speed, years (in continuous variable), and months (as categorical variable), (d) Model 4 adjusting for daily average temperature, relative humidity, and wind speed and considered the effect of particulate filtering respirator.