Table 1. Characteristics of participants in the three examination areas.
Aomori | Yamanashi | Nagasaki | All areas | Total | |||||
(n = 1,630) | (n = 1,366) | (n = 1,369) | |||||||
Age, y | Male | Female | Male | Female | Male | Female | Male | Female | |
3–4 | 11 | 14 | 1 | 4 | 21 | 20 | 33 | 38 | 71 |
5–9 | 181 | 173 | 148 | 170 | 210 | 210 | 539 | 553 | 1,092 |
10–14 | 352 | 321 | 295 | 305 | 295 | 295 | 942 | 921 | 1,863 |
15–18 | 239 | 339 | 154 | 289 | 168 | 150 | 561 | 778 | 1,339 |
Total | 783 | 847 | 598 | 768 | 694 | 675 | 2,075 | 2,290 | 4,365 |