Table 1.

Characteristics of study participants ($n=\mathrm{1,282}$).

Maternal characteristicsa	Percentages	Phthalic acidb		Bisphenolsc		Nonverbal IQd
		Median	P25, P75	Median	P25, P75	$\text{Mean}\pm \text{SD}$
Age (y)
$<20$	2.0	109.2	65.4, 162.5	1.5	1.2, 2.6	$94\pm 15$
$20–<25$	11.5	85.5	61.9, 123.9	1.7	1.1, 2.8	$94\pm 14$
$25–<30$	26.8	82.6	52.1, 129.7	1.7	1.1, 2.8	$102\pm 15$
$30–<35$	42.9	84.7	52.5, 131.8	1.9	1.3, 2.9	$104\pm 16$
$\ge 35$	16.8	85.8	54.5, 135.5	1.9	1.1, 2.9	$104\pm 13$
Prepregnancy BMI ($\mathrm{kg}/{\mathrm{m}}^2$)
$<18.5$	2.5	88.6	45.4, 123.5	1.9	1.3, 3.1	$102\pm 16$
$18.5–<25$	69.8	79.9	51.1, 124.3	1.8	1.1, 2.8	$103\pm 15$
$25–<30$	19.1	95.6	58.2, 146.0	2.1	1.3, 3.3	$100\pm 15$
$\ge 30$	8.6	95.0	67.7, 142.0	1.8	1.2, 3.0	$98\pm 17$
Parity
0	60.5	86.0	54.0, 133.9	1.8	1.2, 2.8	$103\pm 15$
1	28.2	79.9	52.5, 119.3	1.9	1.2, 3.0	$102\pm 15$
$\ge 2$	11.3	88.2	54.2, 139.8	1.7	1.1, 2.8	$98\pm 15$
Ethnicity
Dutch	53.9	81.1	50.4, 131.8	1.9	1.2, 2.9	$106\pm 15$
Other-Western	12.4	78.2	52.9, 128.6	1.7	1.2, 2.5	$102\pm 14$
Non-Western	33.7	88.3	58.7, 132.9	1.8	1.1, 2.9	$96\pm 15$
Educatione
Low	18.9	95.2	65.0, 151.7	1.8	1.2, 2.8	$96\pm 15$
Intermediate	30.7	85.9	55.3, 137.0	1.9	1.2, 3.1	$100\pm 14$
High	50.4	76.2	48.8, 122.1	1.8	1.1, 2.8	$106\pm 14$
Household income (euros/month)
$<\mathrm{1,200}$	15.4	91.1	62.4, 135.9	1.6	1.1, 2.8	$95\pm 15$
1,200–2,000	17.0	86.9	56.2, 137.3	1.9	1.3, 3.0	$100\pm 15$
$>\mathrm{2,000}$	67.6	81.2	50.7, 127.4	1.8	1.2, 2.9	$105\pm 14$
Marital status
Married/living with partner	88.5	82.8	52.0, 128.9	1.8	1.2, 2.9	$103\pm 15$
No partner	11.5	96.2	67.7, 151.0	1.8	1.1, 3.1	$99\pm 15$
IQ score
$\le 85$	22.5	91.3	58.3, 145.5	1.9	1.1, 2.9	$96\pm 15$
$>85–\le 100$	43.3	86.9	55.6, 134.8	1.8	1.2, 2.7	$102\pm 14$
$>100–<115$	17.9	79.3	50.8, 125.2	1.8	1.2, 2.8	$105\pm 14$
$\ge 115$	16.3	72.9	47.3, 118.6	1.9	1.3, 3.1	$107\pm 16$
Smoking
No smoking during pregnancy	75.3	78.7	51.5, 122.7	1.8	1.1, 2.8	$103\pm 15$
Until pregnancy recognized	10.2	97.6	62.8, 140.1	2.0	1.4, 3.2	$101\pm 14$
Continued during pregnancy	14.5	105.6	71.2, 154.8	1.9	1.2, 3.1	$97\pm 15$
Alcoholic beverage consumption
No alcohol consumption	42.1	86.5	56.6, 137.6	1.8	1.1, 2.8	$99\pm 15$
Until pregnancy recognized	17.0	78.5	52.4, 132.7	1.7	1.1, 2.7	$103\pm 14$
Continued occasionallyf	35.2	85.5	51.3, 124.9	2.0	1.3, 3.0	$105\pm 16$
Continued frequentlyg	5.8	74.6	48.1, 129.7	2.0	1.4, 3.1	$105\pm 14$
Infant characteristics	Percentages	Median	P25, P75	Median	P25, P75	$\text{Mean}\pm \text{SD}$
Sex of infant at birth
Male	50.5	84.5	52.6, 130.7	1.9	1.2, 3.0	$102\pm 16$
Female	49.5	84.1	53.7, 132.3	1.7	1.2, 2.7	$101\pm 15$

Note: BMI, body mass index; IQ, intelligence quotient; P, percentile; SD, standard deviation.

^aThere were missing observations for BMI ($n=157$), parity ($n=8$), ethnicity ($n=13$), education ($n=60$), household income ($n=193$), marital status ($n=69$), maternal IQ ($n=34$), smoking ($n=132$), and alcohol consumption ($n=91$).

^bAverage total phthalic acid in micrograms per gram creatinine by category of characteristics.

^cAverage total bisphenols in micrograms per gram creatinine by category of characteristics.

^dNonverbal IQ by category of characteristics.

^eLow: no education finished, primary education, lower vocational training, intermediate general school or $<3\mathrm{y}$ at general secondary school. Intermediate: $\ge 3\mathrm{y}$ of secondary education, intermediate vocational training or first year of higher vocational training. High: University degree or higher vocational training.

^fLess than 1 glass/wk.

^gOne or more glasses/wk for at least two trimesters.