| Overall | Control days | Case days | P-value* |
---|---|---|---|---|
447,845 | 345,926 (77.2%) | 101,919 (22.8%) | Â | |
Particulate matter air pollutants, 2-day moving average (lag 0–1) | ||||
 PM1, µg/m3 | 24.68 (17.24–35.41) | 24.66 (17.24–35.41) | 24.74 (17.24–35.41) | 0.003 |
 PM2.5, µg/m3 | 36.36 (25.20–54.52) | 36.32 (25.2–54.52) | 36.50 (25.2–54.50) | 0.038 |
 PM10, µg/m3 | 63.32 (44.28–93.84) | 63.23 (44.28–93.84) | 63.63 (44.28–93.84) | 0.033 |
Gaseous air pollutants, 2-day moving average (lag 0–1) | ||||
 CO, mg/m3 | 0.88 (0.72–1.10) | 0.88 (0.72–1.10) | 0.88 (0.72–1.10) | 0.242 |
 NO2, µg/m3 | 26.07 (18.88–36.79) | 26.07 (18.88–36.79) | 26.08 (18.88–36.79) | 0.014 |
 O3, µg/m3 | 81.55 (59.38–109.54) | 81.55 (59.38–109.54) | 81.54 (59.38–109.54) | 0.032 |
 SO2, µg/m3 | 13.54 (9.60–20.02) | 13.53 (9.60–20.02) | 13.57 (9.60–20.02) |  < 0.001 |
Meteorological variables, 5-day moving averages (lag 0–4) | ||||
 Relative humidity, % | 72.80 (59.26–81.52) | 72.84 (59.26–81.52) | 72.68 (59.26–81.52) | 0.291 |
 Temperature, Celsius | 16.25 (7.92–22.86) | 16.28 (7.92–22.86) | 16.14 (7.92–22.86) | 0.010 |