Table 1 Description of daily air pollutants, meteorological parameters, and hospitalized characteristics of children with ALRI in the Sichuan Province, China, during 2017–2018
stats | mean ± sd | min | max | p25 | p50 | p75 |
|---|---|---|---|---|---|---|
Air pollutant concentration | ||||||
 PM2.5 | 46.01 ± 30.34 | 9.92 | 178.73 | 24.55 | 36.68 | 59.49 |
 PM10 | 71 ± 41.05 | 18.49 | 226.57 | 39.91 | 59.42 | 93.79 |
 SO2 | 12.01 ± 3.11 | 6.65 | 26.76 | 9.67 | 11.38 | 13.59 |
 NO2 | 28.93 ± 8.36 | 14.03 | 59.09 | 22.4 | 27.51 | 34.86 |
Meteorological measures | ||||||
 Temperature(°C) | 17.81 ± 7.29 | 2.9 | 30.98 | 10.73 | 17.74 | 24 |
 Humidity(%) | 76.82 ± 9.55 | 49.31 | 94.83 | 70.54 | 77.85 | 84.11 |
Hospital admissions(N) | 263.12 ± 102.36 | 104 | 817 | 191 | 247.5 | 310 |
Sex(N) | ||||||
 Boys | 149 ± 59 | 54 | 468 | 109 | 141 | 175 |
 Girls | 114 ± 46 | 37 | 349 | 81 | 106 | 135 |
Age(N) | ||||||
 0-1 years | 111 ± 49 | 36 | 286 | 75 | 98 | 133 |
 2-4 years | 103 ± 43 | 26 | 315 | 72 | 98 | 129 |
 5-14 years | 49 ± 23 | 11 | 216 | 32 | 44 | 60 |
Season(N) | ||||||
 Warm season | 1689 ± 409 | 104 | 284 | 137.5 | 161 | 193 |
 Transition season | 245 ± 62 | 108 | 484 | 207 | 245 | 278 |
 Cold season | 336 ± 101 | 136 | 817 | 253 | 313 | 414 |
Acute lower respiratory infections | ||||||
 Pneumonia | 178 ± 74 | 13 | 539 | 127 | 166 | 209 |
 Bronchitis | 85 ± 33 | 27 | 278 | 62 | 81 | 103 |