Table 1 Statistical description of hospitalization in patients with COPD, air pollutants, and meteorological variables.
Mean | SD | Min | Percentile | Max | |||
|---|---|---|---|---|---|---|---|
P25 | P50 | P75 | |||||
Hospitalizations per day | |||||||
All | 4 | 4 | 0 | 0 | 3 | 7 | 21 |
Male | 3 | 3 | 0 | 0 | 2 | 4 | 15 |
Female | 1 | 2 | 0 | 0 | 1 | 2 | 11 |
< 65 | 3 | 3 | 0 | 0 | 2 | 5 | 16 |
≥ 65 | 1 | 2 | 0 | 0 | 1 | 2 | 9 |
Air pollution | |||||||
DailyPM2.5mean (µg/m3) | 32.6 | 22.6 | 4.0 | 18.0 | 26.0 | 41.0 | 224.00 |
DailyPM2.5max (µg/m3) | 48.1 | 33.9 | 6.0 | 26.0 | 39.3 | 59.8 | 399.7 |
DailyPM2.5mor (µg/m3) | 31.9 | 22.3 | 4.1 | 17.3 | 26.8 | 40.8 | 268.5 |
DailyPM2.5eve (µg/m3) | 30.6 | 22.8 | 4.0 | 15.8 | 24.6 | 37.2 | 258.3 |
PM2.5DECH (µg/m3) | 334.1 | 232.5 | 0.0 | 42.0 | 163.2 | 480.9 | 4142.0 |
PM10 (µg/m3) | 63.4 | 45.5 | 8.0 | 36.0 | 56.0 | 82.0 | 761.0 |
SO2 (µg/m3) | 13.7 | 8.5 | 5.0 | 8.0 | 10.0 | 17.0 | 56.0 |
NO2 (µg/m3) | 30.7 | 13.2 | 8.0 | 20.0 | 28.0 | 38.5 | 74.0 |
CO (mg/m3) | 0.7 | 0.4 | 0.2 | 0.4 | 0.6 | 0.9 | 2.5 |
Meteorological variables | |||||||
Temperature, °C | 11.9 | 9.1 | − 8.9 | 3.8 | 13.1 | 19.8 | 27.8 |
Relative humidity, % | 66.5 | 12.2 | 17.4 | 58.8 | 68.0 | 75.0 | 94.0 |
