Table 1.
Demographic variables.
| Triallelic/biallelic groups | Age mean (SD) | Educationa mean (SD) | Gender male, female (n) | Raceb distribution (n) | |||
|---|---|---|---|---|---|---|---|
| C | AA | H | A | ||||
| Low | 64.04 (8.02) | 15.21 (2.55) | 8, 16 | 22 | 0 | 2 | 0 |
| Medium | 61.57 (7.21) | 15.86 (2.58) | 15, 22 | 24 | 9 | 3 | 1 |
| High | 64.39 (7.99) | 15.91 (1.98) | 7, 16 | 19 | 2 | 2 | 0 |
| SS | 62.86 (7.81) | 15.10 (2.72) | 5, 16 | 19 | 0 | 2 | 0 |
| SL | 63.68 (7.58) | 15.97 (2.54) | 16, 15 | 26 | 4 | 1 | 0 |
| LL | 62.56 (7.90) | 15.81 (2.07) | 9, 23 | 20 | 7 | 4 | 1 |
a
Education = Mean number of years.
b
C = Caucasian, AA = African American, H = Hispanic, A = Asian.