Table 1 Daily hospital outpatients for allergic rhinitis, meteorological and air pollution factors in Xinxiang, 2015–2018
No. of daily outpatients for allergic rhinitis (J30) | Mean (SD) | P1 | P25 | P50 | P75 | P99 |
|---|---|---|---|---|---|---|
11 (8) | 0 | 5 | 8 | 13 | 40 | |
Sex | ||||||
 Female | 5 (5) | 0 | 2 | 4 | 7 | 19 |
 Male | 6 (5) | 0 | 2 | 4 | 7 | 23 |
Age | ||||||
 <15 years | 2 (2) | 0 | 0 | 1 | 2 | 9 |
 15–64 years | 9 (7) | 0 | 4 | 7 | 10 | 33 |
  ≥ 65 years | 1 (1) | 0 | 0 | 0 | 1 | 3 |
Meteorological measures | ||||||
 Mean temperature (°C) | 16 (10) | −2 | 7 | 17 | 25 | 32 |
 Humidity (%) | 60 (17) | 22 | 48 | 62 | 74 | 93 |
Air pollutant concentration (μg/m3) | ||||||
 NO2 | 48 (21) | 16 | 32 | 45 | 61 | 111 |
 SO2 | 33 (25) | 6 | 16 | 26 | 42 | 122 |