Table 4. Mothers age, educational level and socio-economic group by genotype score and drinking behaviour during pregnancy.
Genotype scoreNumber of risk alleles* | Mothers drinking during pregnancy | ||||
Mother’s charateristics | ≤2 | 3 | ≥4 | <1–6 units per week | Abstainers |
Age (years) | 29.2±4.6 | 29.2±4.3 | 29.8±4.5 | 29.7±4.4 | 28.4±4.5 |
Education(%O-level or higher ) | 44.6 | 43.4 | 43.4 | 47.0 | 37.5 |
Socio-economic group(% Non-manual occupation) | 58.7 | 57.7 | 55.7 | 61.7 | 51.8 |