Table 1 Descriptive statistics on daily air pollutants, meteorological parameters and outpatient visits in Jinan, China, 2012–2016
Variable | Mean ± SD | Min | P25 | P50 | P75 | Max |
|---|---|---|---|---|---|---|
Pollutants (μg/m3) | ||||||
PM2.5 | 93.47 ± 56.37 | 14.90 | 56.00 | 80.00 | 113.00 | 443.00 |
PM10 | 166.05 ± 79.85 | 29.10 | 113.00 | 150.00 | 202.50 | 693.00 |
SO2 | 68.75 ± 50.30 | 12.00 | 36.00 | 52.00 | 86.00 | 429.00 |
NO2 | 52.94 ± 21.12 | 13.00 | 38.00 | 49.00 | 64.00 | 165.00 |
CO | 138.40 ± 640.23 | 445.00 | 975.50 | 1221.00 | 1590.00 | 6555.00 |
O3 | 101.32 ± 59.03 | 9.90 | 53.00 | 89.00 | 143.00 | 285.00 |
Meteorological parameters | ||||||
Temperature (°C) | 15.04 ± 10.50 | −12.40 | 5.50 | 17.10 | 24.10 | 34.00 |
Humidity (%) | 56.26 ± 19.43 | 13.00 | 41.00 | 55.00 | 70.00 | 100.00 |
Pressure (kPa) | 996.52 ± 9.11 | 975.70 | 988.70 | 996.60 | 1003.70 | 1021.80 |
Wind speed (m/s) | 2.47 ± 1.07 | 0.20 | 1.70 | 2.20 | 3.00 | 8.40 |
Outpatient visits (cases/per day) | ||||||
Total | 752.00 ± 250.00 | 349.00 | 580.00 | 680.00 | 828.00 | 1631.00 |
Male | 457.00 ± 153.00 | 210.00 | 353.00 | 413.00 | 503.00 | 1021.00 |
Female | 294.00 ± 100.00 | 120.00 | 225.00 | 267.00 | 327.00 | 643.00 |
Age | ||||||
<18y | 281.90 ± 116.25 | 128.00 | 204.00 | 240.00 | 321.50 | 780.00 |
18-44y | 260.80 ± 96.26 | 88.00 | 191.00 | 235.00 | 311.00 | 593.00 |
45-64y | 120.50 ± 39.30 | 38.00 | 93.00 | 116.00 | 141.00 | 282.00 |
>64y | 88.62 ± 38.32 | 18.00 | 59.00 | 83.00 | 111.00 | 276.00 |
Diagnosis | ||||||
Acute bronchitis | 506.00 ± 179.83 | 211.00 | 380.00 | 458.00 | 568.50 | 1152.00 |
Pneumonia | 195.87 ± 80.36 | 65.00 | 140.00 | 169.00 | 232.00 | 482.00 |
Asthma | 27.45 ± 15.57 | 2.00 | 17.00 | 24.00 | 35.00 | 113.00 |
Chronic bronchitis | 22.20 ± 15.10 | 0.00 | 11.00 | 20.00 | 30.00 | 97.00 |