Table 1.
Summary statistics of HFMD, meteorological factors and air pollution in Ningbo city, during 2014–2016
| Groups | Mean | s.d. | Percentile | ||
|---|---|---|---|---|---|
| P1 | P50 | P99 | |||
| All age | 44.0 | 32.4 | 2.0 | 35.0 | 134.0 |
| Sex | |||||
| Male | 26.1 | 19.5 | 0.0 | 21.0 | 80.0 |
| Female | 17.9 | 13.6 | 0.0 | 14.5 | 55.0 |
| Age | |||||
| 0–4 years | 36.5 | 25.9 | 1.0 | 30.0 | 106.0 |
| 5–14 years | 7.5 | 7.4 | 0.0 | 5.0 | 33.1 |
| Environment factors | |||||
| PM2.5 (μg/m3) | 43.2 | 26.4 | 9.7 | 37.0 | 133.4 |
| SO2 (μg/m3) | 41.1 | 17.5 | 12.4 | 38.1 | 89.9 |
| NO2 (μg/m3) | 15.2 | 7.8 | 6.6 | 13.1 | 44.6 |
| O3-8 h (μg/m3) | 94.0 | 40.1 | 13.1 | 90.0 | 197.7 |
| Average temperature (°C) | 17.9 | 8.2 | 2.0 | 19.1 | 31.3 |
| Relative humidity (%) | 76.8 | 11.5 | 46.0 | 78.0 | 96.0 |
| Sunshine duration (h) | 4.1 | 3.9 | 0.0 | 3.4 | 11.6 |