Table 3

Analysis of the association between MNI (Z-scored in units of SD) from mid-pregnancy FFQs and birth weight adjusted for covariates in table 1 (n=1312). Continuous variables were Z-scored for ease of interpretation. The scale is an estimate of root mean square error

Parameter	Model adjustments
	Covariates			Covariates+PFOS
	Estimate	SE	P value	Estimate	SE	P value
Intercept	3721.30	27.33	<0.001	3744.61	27.67	<0.001
MNI_Z	36.93	14.04	0.009	39.51	13.95	0.005
Female	−85.02	26.82	0.002	−88.93	26.65	0.001
Smoker	−30.99	42.33	0.464	−25.74	42.05	0.540
Weight_Z	138.55	13.57	<0.001	137.96	13.48	<0.001
Premature birth	−1062.14	70.73	<0.001	−1052.63	70.27	<0.001
Mom education	−1.32	28.54	0.963	4.90	28.37	0.863
Energy_Z	33.65	14.02	0.016	30.73	13.94	0.028
Log PFOS_Z				−70.39	16.31	<0.001
Scale	484.72	9.46		481.31	9.40

FFQ, Food Frequency Questionnaire; MNI, My Nutrition Index; PFOS, perfluoro-octanesulfonic acid.