Table 2.
Comparing mean score of alcohol use across genotypes and life course stages
| Gene | Genotype | Genotype Frequency | Mean (age 13–18) | No. of Observations | Mean (age 19–26) | No. of Observations |
|---|---|---|---|---|---|---|
| 5HTT | Any S | 0.66 | 1.052 | 3942 | 2.184 | 1835 |
| L/L | 0.34 | 1.050 | 2020 | 2.08 | 941 | |
| DAT1 | Any 9R | 0.38 | 1.036 | 2256 | 2.269 | 1051 |
| 10R/10R | 0.62 | 1.061 | 3706 | 2.07 | 1725 | |
| DRD4 | 7R/7R | 0.043 | 1.004 | 265 | 2.306 | 121 |
| Any 3R | 0.060 | 1.236 | 365 | 2.548 | 157 | |
| Any 4R | 0.83 | 1.038 | 4960 | 2.134 | 2318 | |
| DRD2 | Any A1 | 0.45 | 1.055 | 2664 | 2.07 | 1266 |
| A2/A2 | 0.55 | 1.049 | 3298 | 2.214 | 1510 | |
| MAOA (m) | 3R/Others | 0.41 | 1.166 | 1125 | 2.367 | 545 |
| All else | 0.59 | 1.122 | 1649 | 2.54 | 779 | |
| MAOA (f) | Any 3R | 0.60 | 0.98 | 1894 | 1.864 | 889 |
| All else | 0.40 | 0.96 | 1295 | 1.837 | 563 |