Table 2.
Number of subjects and proportion (%) by birthweight, head size, and parent’s survival status by distance from hypocenters
| Distance from the hypocenters | |||||
|---|---|---|---|---|---|
| < 2000 m | < 3000 m | ≥ 3000 m | NIC | Total | |
| Birth weight | |||||
| Normal (≥ 2500 g) | 559 (78.2) | 323 (86.4) | 557 (70.6) | 516 (88.2) | 1955 (79.4) |
| Low (< 2500 g) | 84 (11.7) | 28 (7.5) | 49 (6.2) | 45 (7.7) | 206 (8.4) |
| Unknowna | 47 (6.6) | 18 (4.8) | 21 (2.7) | 19 (3.2) | 105 (4.3) |
| No informationb | 25 (3.5) | 5 (1.3) | 162 (20.5) | 5 (0.9) | 197 (8.0) |
| Head size | |||||
| Male, nomal head size | 330 (93.0) | 192 (100.0) | 379 (99.0) | 282 (99.3) | 1183 (97.4) |
| Male, small head size | 25 (7.0) | 0 (0.0) | 4 (1.0) | 2 (0.7) | 31 (2.6) |
| Female, nomal head size | 341 (94.7) | 182 (100.0) | 401 (98.8) | 295 (98.0) | 1219 (97.6) |
| Female, small head size | 19 (5.3) | 0 (0.0) | 5 (1.2) | 6 (2.0) | 30 (2.4) |
| Father’s survival status | |||||
| Alive | 416 (58.2) | 268 (71.7) | 359 (45.5) | 264 (45.1) | 1307 (53.1) |
| Lost | 226 (31.6) | 89 (23.8) | 102 (12.9) | 50 (8.5) | 467 (19.0) |
| Mother’s survival status | |||||
| Alive | 576 (80.6) | 323 (86.4) | 426 (54.0) | 288 (49.2) | 1613 (65.5) |
| Lost | 66 (9.2) | 34 (9.1) | 35 (4.4) | 26 (4.4) | 161 (6.5) |
| Parent’s survival status | |||||
| No information | 73 (10.2) | 17 (4.5) | 328 (41.6) | 271 (46.3) | 689 (28.0) |
| Total | 715 | 374 | 789 | 585 | 2463 |
aUnknown: Individuals who were surveyed but of whom information was insufficient in either the clinical program and the socioeconomic survey
bNo information: Individuals who were not surveyed in any programs