Table 1

Distribution of selected characteristics in 1745 pregnant women, Kyushu Okinawa Maternal and Child Health Study, Japan

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)

Having one or more older siblings

914 (52.4)

Having one or more children

1042 (59.7)

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)

Family history of asthma

330 (18.9)

Family history of atopic eczema

303 (17.4)

Family history of allergic rhinitis

759 (43.5)

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


Miyake et al. Nutrition Journal 2012 11:19   doi:10.1186/1475-2891-11-19

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