Table 1 Distribution of selected characteristics in 1741 women, KOMCHS, Japan
Variable | Mean ± SD or n(%) |
|---|---|
Age, years, mean ± SD | 31.2 ± 4.4 |
Gestation, weeks, mean ± SD | 18.5 ± 5.4 |
Region of residence | |
Fukuoka Prefecture | 969 (55.7) |
Other than Fukuoka Prefecture in Kyushu | 590 (33.9) |
Okinawa Prefecture | 182 (10.5) |
Number of children | |
0 | 700 (40.2) |
1 | 689 (39.6) |
≥ 2 | 352 (20.2) |
Nuclear family structurea | 1471 (84.5) |
History of depression | 82 (4.7) |
Family history of depression | 174 (10.0) |
Having ever smoked | 562 (32.3) |
Ever experiencing secondhand smoke exposure at home | 1313 (75.4) |
Ever experiencing secondhand smoke exposure at work | 1103 (63.4) |