Table 1 Distribution of selected characteristics in 1745 pregnant women
Variable | n (%) |
|---|---|
Age, years, mean ± SD | 31.2 ± 4.3 |
Gestation, weeks, mean ± SD | 18.5 ± 5.4 |
Region of residence | |
Fukuoka Prefecture | 971 (55.6) |
Other than Fukuoka Prefecture in Kyushu | 592 (33.9) |
Okinawa Prefecture | 182 (10.4) |
Number of children | |
0 | 703 (40.3) |
1 | 690 (39.5) |
≥ 2 | 352 (20.2) |
Nuclear family structure | 1474 (84.5) |
History of depression | 84 (4.8) |
Family history of depression | 175 (10.0) |
Having ever smoked | 563 (32.3) |
Ever experiencing secondhand smoke exposure at home | 1315 (75.4) |
Ever experiencing secondhand smoke exposure at work | 1106 (63.4) |
Job typea | |
Unemployed | 705 (40.4) |
Professional or technical | 435 (24.9) |
Clerical or related occupation | 328 (18.8) |
Sales | 83 (4.8) |
Service | 115 (6.6) |
Production | 51 (2.9) |
Othersb | 28 (1.6) |
Household income, yen/year | |
< 4,000,000 | 632 (36.2) |
4,000,000 − 5,999,999 | 618 (35.4) |
≥ 6,000,000 | 495 (28.4) |
Education, years | |
< 13 | 428 (24.5) |
13 − 14 | 577 (33.1) |
≥ 15 | 740 (42.4) |
Body mass index, kg/m2, mean ± SD | 21.4 ± 2.8 |
Daily nutrient intakec | |
Total energy, kJ, mean ± SD | 7434.2 ± 2057.0 |
Seaweed, g, mean ± SD | 12.3 ± 12.7 |
Fish, g, mean ± SD | 46.7 ± 25.8 |
Yogurt, g, mean ± SD | 34.8 ± 39.5 |