| Group | Age Range 1 | Age Range 2 | |||||||
| Age (SEM) | Female | Male | Total | Age (SEM) | Female | Male | Total | ||
| Japanese | 5.78 (0.20) | 52.63% | 47.37% | 19 | 10.30 (0.19) | 50.00% | 50.00% | 18 | |
| Caucasian | 5.98 (0.15) | 57.98% | 42.11% | 19 | 10.11 (0.19) | 50.00% | 50.00% | 18 | |
| Total | 5.84 (0.12) | 55.26% | 44.74% | 38 | 10.19 (0.14) | 50.00% | 50.00% | 36 | |