Table 1 Descriptive statistics of the daily incidence of NPC, daily air pollutants, and climate data in Hangzhou, China, from Jan 1, 2013, to Dec 31, 2022.
Variables | Number | Mean ± SD | Min | P25 | Median | P75 | Max |
|---|---|---|---|---|---|---|---|
Daily incidence (NPC) | |||||||
Total | 3121 | 0.85 ± 1.07 | 0 | 0 | 1 | 1 | 10 |
Male | 2250 | 0.62 ± 0.88 | 0 | 0 | 0 | 1 | 8 |
Female | 871 | 0.24 ± 0.52 | 0 | 0 | 0 | 0 | 5 |
Non-elderly | 2298 | 0.63 ± 0.89 | 0 | 0 | 0 | 1 | 7 |
Elderly | 823 | 0.23 ± 0.50 | 0 | 0 | 0 | 0 | 4 |
Urban areas | 2070 | 0.57 ± 0.84 | 0 | 0 | 0 | 1 | 8 |
Rural areas | 1051 | 0.29 ± 0.56 | 0 | 0 | 0 | 0 | 4 |
Warm season | 1640 | 0.90 ± 1.06 | 0 | 0 | 1 | 1 | 6 |
Cold season | 1481 | 0.81 ± 1.09 | 0 | 0 | 0 | 1 | 10 |
Daily air pollutant concentrations | |||||||
PM2.5, μg/m3 | 43.02 ± 28.88 | 3.08 | 23.49 | 35.55 | 54.91 | 362.82 | |
PM10, μg/m3 | 68.58 ± 39.28 | 0.00 | 40.27 | 59.73 | 87.93 | 324.18 | |
SO2, μg/m3 | 11.59 ± 8.70 | 3.00 | 6.18 | 8.36 | 13.73 | 78.27 | |
NO2, μg/m3 | 40.27 ± 16.35 | 6.08 | 28.18 | 38.18 | 50.33 | 112.82 | |
CO, mg/m3 | 0.80 ± 0.25 | 0.35 | 0.63 | 0.75 | 0.92 | 2.47 | |
O3, μg/m3 | 94.39 ± 48.65 | 5.34 | 56.46 | 86.91 | 129.46 | 261.36 | |
Climate factors | |||||||
Temperature, ℃ | 18.16 ± 8.81 | -5.00 | 10.50 | 18.90 | 25.40 | 35.98 | |
Humidity, % | 72.74 ± 14.28 | 27.00 | 63.00 | 74.00 | 84.00 | 99.00 | |
