| Number of subjects (%) | ||
| Thailand | Japan | |
| Gender | ||
| Men | 29 (26.6%) | 86 (38.9%) |
| Women | 80 (73.4%) | 134 (60.6%) |
| No reply | 0 (0.0%) | 1 (0.5%) |
| Age | ||
| 18 y.o | 0 (0.0%) | 1 (0.5%) |
| 19 y.o | 0 (0.0%) | 128 (57.9%) |
| 20 y.o | 5 (4.6%) | 80 (36.2%) |
| 21 y.o | 21 (19.3%) | 11 (5.0%) |
| more than 21 y.o. | 83 (76.2%) | 1 (0.5%) |
| Total | 109 (100.0%) | 221 (100.0%) |