Table 1.
Descriptive statistics of the hospitalization for pneumonia and asthma among children aged < 5 years, Ningbo City, 2015–2017.
| Variable | N | Mean ±SD | Min | P25 | P50 | P75 | Max |
|---|---|---|---|---|---|---|---|
| Daily hospitalizations | |||||||
| Pneumonia | 10,301 | 10.7 ± 5.0 | 1 | 7 | 10 | 14 | 30 |
| Asthmaa | 115 | 3.6 ± 2.8 | 0 | 1 | 3 | 5 | 13 |
| Totally daily hospitalizations by age | |||||||
| Infants (< 1 year) | 2,634 | 2.7 ± 2.0 | 0 | 1 | 2 | 4 | 11 |
| 1–5 years | 7,782 | 8.0 ± 4.0 | 0 | 5 | 7 | 11 | 25 |
| Totally daily hospitalizations by sex b | |||||||
| Boy | 4,730 | 4.9 ± 2.8 | 0 | 3 | 4 | 7 | 16 |
| Girl | 3,520 | 3.6 ± 2.3 | 0 | 2 | 3 | 5 | 14 |
| Totally daily hospitalizations by season | |||||||
| Cold (November–April) | 5,939 | 12.3 ± 5.1 | 1 | 8 | 12 | 16 | 28 |
| Warm (May–October) | 4,477 | 9.3 ± 4.5 | 2 | 6 | 9 | 12 | 30 |
PM2.5, particulate matter < 2.5 μm in diameter; PM10, particulate matter < 10 μm in diameter.
a
Asthma hospitalizations accumulate on a monthly basis;
b
2,166 cases of missing gender labels.