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. 2020 Jul 26;3(2):162–171. doi: 10.1136/bmjnph-2020-000099

Table 2.

Analysis of the association between MNI (Z-scored, in units of SD) from mid-pregnancy FFQs and WISC IQ at 7 years adjusted for covariates in table 1 (n=767). Continuous variables were Z-scored for ease of interpretation. The scale is an estimate of root mean square error

Parameter Model adjustments
Covariates Covariates+birth weight Covariates+birth weight+BPF
Estimate SE P value Estimate SE P value Estimate SE P value
Intercept 95.63 0.95 <0.001 95.48 0.95 <0.001 95.25 0.94 <0.001
MNI_Z 1.29 0.50 0.010 1.18 0.50 0.017 1.29 0.49 0.009
Female 3.90 0.87 <0.001 4.16 0.88 <0.001 4.43 0.86 <0.001
Smoker −2.38 1.45 0.101 −2.42 1.45 0.094 −2.18 1.42 0.126
Weight_Z −1.16 0.43 0.007 −1.44 0.45 0.002 −1.52 0.44 0.001
Premature birth −3.15 2.21 0.154 −1.19 2.40 0.618 −0.98 2.36 0.677
Mom education 4.07 0.99 <0.001 4.01 0.99 <0.001 4.23 0.97 <0.001
Mom IQ_Z 1.99 0.45 <0.001 1.99 0.45 <0.001 2.04 0.44 <0.001
Energy_Z −0.35 0.47 0.454 −0.41 0.47 0.380 −0.42 0.47 0.366
Birth Weight_Z 1.02 0.49 0.037 1.22 0.48 0.012
Creatinine_Z 0.58 0.44 0.187
LogBPF_Z −1.38 0.42 0.001
Scale 12.02 0.31 11.98 0.31 11.77 0.30

BPF, bisphenol F; FFQ, Food Frequency Questionnaire; MNI, My Nutrition Index; WISC, Wechsler Intelligence Scale for Children.