Table 1 Distribution of selected characteristics in 1743 pregnant women, Kyushu Okinawa Maternal and Child Health Study, Japan
Variable | No. (%) or mean ± SD |
|---|---|
Age, years, mean ± SD | 31.2 ± 4.4 |
Region of residence, % | |
Fukuoka Prefecture | 970 (55.7) |
Other than Fukuoka Prefecture in Kyushu | 591 (33.9) |
Okinawa Prefecture | 182 (10.4) |
Family history of asthma, % | 330 (18.9) |
Family history of atopic eczema, % | 302 (17.3) |
Family history of allergic rhinitis, % | 759 (43.6) |
Household income, %, yen/year | |
< 4,000,000 | 632 (36.3) |
4,000,000 - 5,999,999 | 618 (35.5) |
≥ 6,000,000 | 493 (28.3) |
Education, %, years | |
< 13 | 428 (24.6) |
13 - 14 | 576 (33.1) |
≥ 15 | 739 (42.4) |
Smoking status, % | |
Never | 1182 (67.8) |
Former | 503 (28.9) |
Current | 58 (3.3) |
Pack-years of smoking, % | |
None | 1182 (67.8) |
0.05 - 3.9 | 262 (15.0) |
≥ 4.0 | 299 (17.2) |