Table 2 Characteristics of 1565 mother-child pairs categorized according to alcohol consumption during pregnancy
Alcohol consumption during pregnancy | ||||
|---|---|---|---|---|
Variable | None (n = 1356) | < 1.0 g/day (n = 137) | ≥ 1.0 g/day (n = 72) | Pfor trenda |
Age, years, mean | 31.2 | 31.4 | 31.6 | 0.48 |
Region of residence, % | 0.78 | |||
Fukuoka Prefecture | 56.3 | 54.7 | 61.1 | |
Other than Fukuoka Prefecture in Kyushu | 33.5 | 38.0 | 29.2 | |
Okinawa Prefecture | 10.2 | 7.3 | 9.7 | |
Number of children, % | 0.01 | |||
0 | 39.8 | 36.5 | 34.7 | |
1 | 41.2 | 38.0 | 31.9 | |
≥ 2 | 19.0 | 25.6 | 33.3 | |
Nuclear family structure, % | 85.6 | 81.8 | 87.5 | 0.78 |
Maternal education, years, % | 0.01 | |||
< 13 | 22.4 | 21.2 | 38.9 | |
13 - 14 | 33.6 | 31.4 | 33.3 | |
≥ 15 | 44.0 | 47.5 | 27.8 | |
Maternal employmentb, % | 59.8 | 62.0 | 65.3 | 0.31 |
Body mass index, kg/m2, mean | 21.3 | 21.8 | 21.9 | 0.02 |
Maternal smoking during pregnancy, % | < 0.0001 | |||
None | 92.3 | 89.1 | 73.6 | |
First trimester only | 4.1 | 5.8 | 11.1 | |
Second and/or third trimesters but not throughout | 1.6 | 1.5 | 5.6 | |
Throughout | 2.0 | 3.7 | 9.7 | |
Gestational age, weeks, mean | 38.9 | 38.5 | 38.8 | 0.04 |
Male gender, % | 49.0 | 43.1 | 52.8 | 0.85 |