Table 1. Regions and demographics of individuals assessed for immunity to HAV.
| Region | Province | Hospital name | District | Participants | Male | Female | Age range | Mean age ± SD (yr) |
|---|---|---|---|---|---|---|---|---|
| North | Uttaradit | Uttaradit Hospital | Mueang Uttaradit | 614 | 268 | 346 | 6 mo–62 yr | 22.9 ± 17.9 |
| (n = 961) | Laplae Hospital | Laplae | ||||||
| Phitsanulok | Naresuan University Hospital | Mueang Phitsanulok | 347 | 126 | 221 | 5 mo–68 yr | 27.8 ± 18.7 | |
| Center | Lop Buri | King Narai Hospital | Khao Sam Yot | 614 | 299 | 315 | 7 mo–71 yr | 26.5 ± 18.4 |
| (n = 1,125) | Phra Nakhon Si Ayutthaya | Phra Nakhon Si Ayutthaya Hospital | Phra Nakhon Si Ayutthaya | 511 | 209 | 302 | 6 mo–60 yr | 26.3 ± 17.7 |
| Northeast | Khon Kaen | Chumphae Hospital | Chumphae | 1,109 | 526 | 583 | 6 mo–61 yr | 25.4 ± 17.7 |
| (n = 1,109) | ||||||||
| South | Narathiwat | Narathiwat Ratchanakarin Hospital | Mueang Narathiwat | 565 | 157 | 408 | 7 mo–60 yr | 31.0 ± 16.9 |
| (n = 1,065) | Trang | Trang Hospital | Mueang Trang | 500 | 207 | 293 | 1 mo–62 yr | 25.1 ± 25.1 |
| TOTAL | 4,260 | 1,792 | 2,468 | 1 mo–71 yr | 26.5 ± 18.2 |