Table 1. The demographic characteristics of probable hand, foot and mouth disease cases in Neijiang, Sichuan, China between 2010 and 2017 (N, %) a.
| Year | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | In total |
|---|---|---|---|---|---|---|---|---|---|
| Incidence rate (per 100 thousand) |
19.51 | 36.86 | 70.73 | 58.76 | 63.83 | 42 | 60.22 | 46.63 | 49.82 |
| Number of probable cases | 815 | 1362 | 2619 | 2182 | 2379 | 1572 | 2252 | 1747 | 14928 |
| Number of severe cases b | 2 | 14 | 0 | 12 | 6 | 3 | 7 | 3 | 47 |
| Age (months) | |||||||||
| Median | 28 | 23 | 26 | 32 | 30 | 24 | 34.5 | 27 | 27 |
| IQR c (25th to 75th percentile) | 12–38.5 | 15.5–36 | 13–41.5 | 18–46 | 17–42 | 15–46 | 19–48.5 | 14–42 | 16–39 |
| Gender | N = 8765d | ||||||||
| Male | 538(66.0%) | N/Ad | N/A | N/A | 1400 (58.8%) |
945 (60.1%) |
1339 (59.5%) |
996 (57.0%) |
5218 (59.5%) |
| Female | 277(34.0%) | N/A | N/A | N/A | 979 (41.2%) |
627 (39.9%) |
913 (40.5%) |
751 (43.0%) |
3547 (40.5%) |
| Population classification | |||||||||
| Scattered children e | 511 (62.7%) |
1051 (77.2%) |
2072 (79.1%) |
1866 (85.5%) |
2111 (88.7%) |
1359 (86.5%) |
1842 (81.8%) |
1380 (79.0%) |
12192 (81.7%) |
| In kindergarten | 276 (33.9%) |
269 (19.8%) |
459 (17.5%) |
294 (13.5%) |
238 (10.0%) |
199 (12.7%) |
381 (16.9%) |
342 (19.6%) |
2458 (16.5%) |
| In primary school | 24(2.9%) | 27(2.0%) | 51(1.9%) | 19(0.9%) | 26(1.1%) | 10(0.6%) | 23(1.0%) | 21(1.2%) | 201(1.3%) |
| others | 4(0.5%) | 15(1.1%) | 37(1.4%) | 3(0.1%) | 4(0.2%) | 4(0.3%) | 6(0.3%) | 4(0.2%) | 77(0.5%) |
a Data are reported as the number and percent of total in each year and in total.
b No fatal case was reported within severe cases.
c IQR: interquartile range.
d The gender data between 2011 and 2013 were not available; N/A, not available.
e Scattered children are defined as children who were taken care of by their family members