TABLE 1

Distribution of Exposure Characteristics in Relation to Overweight at Early Age (12 and/or 18 months)

	N	High BMI^a at Early Age (n = 430)
	N	n	%	95% CI
All children	1951	430	22.0
Gender
Female	951	210	22.1	19.5–24.9
Male	1000	220	22.0	19.5–24.7
Exclusive breastfeeding
<4 mo	360	75	20.8	16.8–25.4
≥4 mo	1566	348	22.2	20.2–24.4
Maternal age at baseline
≤25 y	136	22	16.2	10.4–23.5
>25 y	1814	408	22.5	20.6–24.5
Parental history of allergic disease
No	1347	303	22.5	20.3–24.8
Yes	588	124	21.1	17.9–24.6
Maternal asthma
No	1768	390	22.1	20.1–24.1
Yes	183	40	21.9	16.1–28.6
Maternal smoking^b
No	1717	361	21.0	19.1–23.0
Yes	234	69	29.5	23.7–35.8
Birth wt
Quantile 1: ≤3335 g	632	93	14.7	12.0–17.7
Quantile 2: 3336–3765 g	644	134	20.8	17.7–24.2
Quantile 3: ≥3766 g	658	200	30.4	26.9–34.1
Maternal overweight^c
No	1330	272	20.5	18.3–22.7
Yes	357	91	25.5	21.0–30.3
Socioeconomic status
White-collar worker	1633	355	21.7	19.8–23.8
Blue-collar worker	293	69	23.6	18.8–28.8
Early symptoms^d
No	1102	230	20.9	18.5–23.4
Yes	817	192	23.5	20.6–26.6

↵a Cutoff point of BMI was set to the 85th percentile based on children in the BAMSE study. High BMI was defined as a BMI ≥85th percentile.
↵b The mother smoked at least 1 cigarette per day at any point during pregnancy and/or at baseline.
↵c BMI ≥25 on the basis of the mother’s prepregnancy weight.
↵d Symptoms of wheeze and/or eczema during the first 2 year of the child’s life.