Table 5.

Association between PAH metabolites and anthropometric measures at birth by multiple linear regression.

PAH metabolites∗	Birth weight (g)				Cephalization index (cm/g)				Chest circumference (cm)				Child length (cm)				Head circumference (cm)				Ponderal index (g/cm3)
	β	SE	P	PAH and ETS interaction P	β	SE	P	PAH and ETS interaction P	β	SE	P	PAH and ETS interaction P	β	SE	P	PAH and ETS interaction P	β	SE	P	PAH and ETS interaction P	β	SE	P	PAH and ETS interaction P
∑OH-PHE	−45	65	0.5	0.2	0.7	1.6	0.6	0.04	−0.4	0.3	0.2	0.5	0.1	0.4	0.8	0.3	−0.1	0.2	0.6	0.2	−0.03	0.03	0.4	0.8
∑PHE-diol	−6	29	0.8	0.1	0.2	0.8	0.8	0.06	−0.2	0.1	0.2	0.3	−0.03	0.2	0.9	0.08	−0.2	0.1	0.2	0.9	−0.01	0.02	0.6	0.2
∑OH-PYR	−15	56	0.8	0.3	−0.3	1.3	0.8	0.2	−0.4	0.2	0.06	0.2	−0.1	0.4	0.9	0.5	−0.1	0.2	0.5	0.7	−0.01	0.03	0.7	0.6

Adjusted for: Birth weight: gestational age, newborns' gender, maternal pre-pregnancy BMI, maternal height.

Birth length: gestational age, newborns' gender, maternal age, maternal height.

Birth head circumference: gestational age, newborns' gender, maternal pre-pregnancy BMI, maternal height, log transformed cotinine level during pregnancy (except PAH and ETS interaction analysis), season of last menstrual period.

Birth chest circumference: gestational age, newborns' gender, maternal pre-pregnancy BMI, maternal height, log transformed cotinine level during pregnancy (except PAH and ETS interaction analysis), parity.

Ponderal index: gestational age, newborns' gender, maternal age, maternal pre-pregnancy BMI, maternal education.

Cephalization index: gestational age, newborns' gender, maternal pre-pregnancy BMI, maternal height.

β-beta coefficient (and SE standard error).

P-P-value.

*PAH metabolites were log transformed.