TABLE 4

Infants Who Had Been Breastfed at Any Time: Regression Coefficients, SEs, CIs, P Values, and Adjusted P Values for Each Predictor and Control Variable for Wave 4 MR Scores (n = 4679)

VariableaB CoefficientSE95% CIPAdjusted Pb
Intercept2.882.14−1.32 to 7.09.18N/A
Child’s age wave 41.830.291.27 to 2.40<.001<.001
Mother’s modified AUDIT-C score wave 1c−0.110.03−0.18 to −0.04.001.01
Average daily cigarettes while pregnant−0.050.03−0.12 to 0.02.13.46
Pregnancy: average d per wk drinking alcohol0.190.14−0.08 to 0.46.16.46
Child’s birth wt<0.001<0.001<0.001 to <0.001.17.46
Pregnancy: average No. drinks0.220.17−0.12 to 0.55.21.48
Learning difficulty wave 4−1.511.55−4.66 to 1.64.34.54
Mother’s age wave 1−0.010.02−0.04 to 0.02.35.54
Combined family income−0.030.03−0.09 to 0.04.38.54
Mother’s average daily cigarettes wave 1d0.020.03−0.03 to 0.07.39.54
Breastfeeding duration<0.001<0.001<0.001 to 0.001.48.61
Mother’s level of education0.040.06−0.08 to 0.15.54.63
Head injury wave 40.861.56−2.31 to 4.02.59.63
Child’s sex−0.050.15−0.33 to 0.24.76.76
  • N/A, not applicable.

  • a VIF <10 for all variables.

  • b Benjamini-Hochberg method.

  • c Unadjusted B = −0.07; SE = 0.03; 95% CI: −0.12 to 0.01; P = .03.

  • d Unadjusted B = −0.01; SE = 0.02; 95% CI: −0.04 to 0.02; P = .50.