Table IV.

Adjusted ORs (95% confidence intervals) between birth weight and phthalates in cord serum and meconium^*

	Quartile†
Groups	1 (ref)	2	3	4	P
Cord serum, mg/L
DEP	1.0	1.28 (0.92–1.65)	0.69 (0.30–1.57)	1.11 (0.43–2.28)	.38
DBP	1.0	0.54 (0.45–1.47)	2. 69 (1.30–4.74)	3.54 (1.54–6.15)	.008
DEHP	1.0	0.52 (0.23–1.16)	1.27 (0.57–2.84)	1.19 (0.79–2.05)	.11
MEHP	1.0	0.53 (0.31–1.61)	1.22 (0.90–2.52)	2.05 (1.17–3.70)	.05
Meconium, mg/g
MBP	1.0	1.58 (1.08–2.46)	2.84 (1.19–4.82)	4.68 (2.14–6.85)	.000
MEHP	1.0	1.12 (0.89–2.03)	2.89 (1.19–5.02)	3.23 (1.31–5.94)	.04

^*Adjustment made for gestational age, smoking at home, socioeconomic level, prepregnancy BMI, and other phthalate variable (in quartiles), using the backward-elimination method.

^†Quartile 1, √LOD∼24th percentile; quartile 2, 25th∼49th percentiles; quartile 3, 50th∼74th percentiles; quartile 4, 75th percentile∼maximum value.