Table 1 COMT genotypes related to sex, age, and education.
No COMT genotyping | Met/Met | Met/Val | Val/Val | |
|---|---|---|---|---|
Characteristics | (n = 61,770) | (n = 962) | (n = 1501) | (n = 554) |
Sex, female (%) | 53.0 | 53.8 | 52.5 | 55.2 |
Age, mean (SD) | 48.9 (17.1) | 53.0 (18.3) | 52.9 (18.1) | 52.2 (18.0) |
Years of education | ||||
≤ 9 (%) | 36 | 40 | 42 | 40 |
10–12 (%) | 44 | 41 | 41 | 41 |
> 12 (%) | 20 | 19 | 17 | 19 |