Table 1.
Genotype Frequencies and Hardy-Weinberg Equilibrium Tests
| Mothers |
Infants |
|||||
|---|---|---|---|---|---|---|
| Genotypes | Whole sample | European American | African American | Whole sample | European American | African American |
| AVPR1a | ||||||
| L/L | 76 (36.7%) | 41 (39.0%) | 35 (34.3%) | 74 (36.5%) | 39 (37.5%) | 35 (35.4%) |
| L/S | 100 (48.3%) | 52 (49.5%) | 48 (47.1%) | 90 (44.3%) | 48 (46.2%) | 42 (42.4%) |
| S/S | 31 (15.0%) | 12 (11.4%) | 19 (18.6%) | 39 (19.2%) | 17 (16.3%) | 22 (22.2%) |
| DRD4 | ||||||
| L/L | 10 (4.8%) | 5 (4.7%) | 5 (4.9%) | 14 (6.8%) | 8 (7.6%) | 6 (5.9%) |
| L/S | 72 (34.4%) | 32 (30.2%) | 40 (38.8%) | 61 (29.6%) | 27 (25.7%) | 34 (33.7%) |
| S/S | 127 (60.8%) | 69 (65.1%) | 58 (56.3%) | 131 (63.6%) | 70 (66.7%) | 61 (60.4%) |
| HWE test | ||||||
| AVPR1a | .84 | .46 | .72 | .22 | .73 | .17 |
| DRD4 | .96 | .61 | .56 | .07 | .09 | .75 |
Note. n = 207 for mothers' AVPR1a, n = 209 for mothers DRD4, n = 203 for infants' AVPR1a, and n = 206 for infants' DRD4. Genotype frequencies are provided by maternal race. p values from Hardy-Weinberg Equilibrium tests are presented.