Table 2.
Univariate comparison of the meteorological and air pollutant average diurnal measures (±standard deviation) between cases and controls, for the cooling-down and warming-up seasons, respectively.
| RH (%) | TX (°C) | AP (hPa) | CO (10 ppb) | PM10 (ug/m3) | PM2.5 (ug/m3) | NO2 (ppb) | SO2 (ppb) | O3 (ppb) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Cooling–down season | ||||||||||
| (N = 137) | Case | 73.84 ± 6.45 | 19.36 ± 3.64 | 1003.17 ± 29.12 | 51.67 ± 11.26 | 61.33 ± 16.04 | 36.09 ± 10.06 | 18.16 ± 4.19 | 3.7 ± 0.96 | 27.62 ± 7.75 |
| Control | 73.26 ± 7.02 | 21.51 ± 5.03 | 1001.52 ± 29.21 | 48.05 ± 13.15 | 60.31 ± 16.81 | 35.94 ± 10.75 | 17.10 ± 5.01 | 3.85 ± 1.03 | 28.66 ± 8.27 | |
| P-value | 0.406 | <0.0001 | 0.589 | 0.006 | 0.552 | 0.889 | 0.033 | 0.142 | 0.213 | |
| Warming–up season | ||||||||||
| (N = 140) | Case | 76.09 ± 6.39 | 27.02 ± 2.78 | 992.46 ± 33.08 | 35.56 ± 11.98 | 47.3 ± 15.79 | 26.82 ± 10.61 | 12.44 ± 4.77 | 3.52 ± 1.02 | 29.24 ± 8.11 |
| Control | 76.34 ± 6.42 | 23.74 ± 4.92 | 995.6 ± 34 | 41.52 ± 15.11 | 55.61 ± 20.43 | 31.99 ± 12.81 | 14.66 ± 5.66 | 3.57 ± 1.01 | 28.56 ± 6.9 | |
| P-value | 0.711 | <0.0001 | 0.365 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | 0.624 | 0.371 | |
RH: Relative humidity, AP: atmospheric pressure, TX: ambient temperature.