Alcohol consumption levels of women and their partners at each time point
| Alcohol exposure time-point | Measure | Categorisation | N (%) |
|---|---|---|---|
| Maternal pre-pregnancy* | How often drunk alcohol | Never | 421 (6.2) |
| <1 glass/week | 2545 (37.6) | ||
| ≥1 glass/week | 3006 (44.5) | ||
| ≥1 glass/day | 788 (11.7) | ||
| Maternal at 18 weeks gestation | Total number of glasses/week | 0 | 4744 (70.6) |
| 1–2 | 957 (14.2) | ||
| 3–7 | 718 (10.7) | ||
| >7 | 302 (4.5) | ||
| Maternal binge drinking (at 18 weeks gestation) | Number of days in last month when ≥4 glasses drunk (binge drinking) | 0 | 5709 (84.8) |
| 1–4 | 778 (11.6) | ||
| 5–10 | 116 (1.7) | ||
| >10 | 129 (1.9) | ||
| Maternal postnatal (47 months) | Total number of glasses/week | 0 | 1756 (28.7) |
| 1–2 | 1052 (17.2) | ||
| 3–7 | 1918 (31.4) | ||
| >7 | 1387 (22.7) | ||
| Paternal first 3 months pregnancy | How often drunk alcohol | Never | 189 (3.5) |
| <1 glass/week | 1200 (22.3) | ||
| ≥1 glass/week | 2843 (52.7) | ||
| ≥1 glass/day | 1158 (21.5) | ||
| Paternal binge drinking (at 18 weeks gestation) | Number of days in last month when ≥4 glasses drunk | 0 | 901 (16.6) |
| 1–4 | 2029 (37.3) | ||
| 5–10 | 1449 (26.6) | ||
| >10 | 1063 (19.5) |
*Pre-pregnancy exposure was recorded at 18 weeks gestation.