Table 1 Descriptive statistics of ILI, air pollutants, and meteorological data in Changchun, 2017 to 2022
From: Time series analysis of the impact of air pollutants on influenza-like illness in Changchun, China
Variables | Mean ± SD | Min | Percentile | Max | ||
|---|---|---|---|---|---|---|
25 | 50 | 75 | ||||
ILI data | ||||||
Total | 38 ± 23 | 1 | 29 | 35 | 44 | 335 |
0–4 years old | 16 ± 8 | 0 | 11 | 15 | 20 | 51 |
5–14 years old | 7 ± 4 | 0 | 4 | 7 | 10 | 22 |
15–24 years old | 4 ± 5 | 0 | 1 | 2 | 5 | 60 |
25–59 years old | 7 ± 16 | 0 | 2 | 3 | 8 | 240 |
60 years old and above | 3 ± 4 | 0 | 1 | 2 | 4 | 40 |
Air pollutants data | ||||||
PM2.5 (µg/m3) | 36 ± 34 | 3 | 16 | 26 | 44 | 415 |
PM10 (µg/m3) | 62 ± 39 | 5 | 36 | 52 | 76 | 402 |
SO2 (µg/m3) | 13 ± 13 | 2 | 5 | 9 | 16 | 106 |
NO2 (µg/m3) | 33 ± 13 | 7 | 24 | 31 | 40 | 106 |
O3 (µg/m3) | 81 ± 36 | 19 | 52 | 75 | 102 | 235 |
CO (mg/m3) | 0.8 ± 0.3 | 0.2 | 0.5 | 0.7 | 0.9 | 3.1 |
Meteorological data | ||||||
t (°C) | 7.2 ± 13.9 | -26.1 | -5.0 | 9.4 | 19.6 | 29.9 |
RH (%) | 62.2 ± 18.6 | 14.0 | 48.0 | 62.0 | 77.0 | 100.0 |
precip.(mm) | 1.9 ± 7.3 | 0.0 | 0.0 | 0.0 | 0.2 | 86.5 |
WS(m/s) | 2.7 ± 1.1 | 0.3 | 1.9 | 2.6 | 3.4 | 7.3 |