Table 4. Adjusted Associations of Breastfeeding Duration With Cognitive Test Scores.

	Any breastfeeding to 12 months	Exclusive breastfeeding* to 6 months
	Points per month breastfed and 95% confidence interval
Age 3 years
PPVT-III	0.21 (0.03, 0.38)	0.50 (0.11, 0.89)
WRAVMA
Drawing	0.01 (-0.15, 0.16)	-0.12 (-0.47, 0.22)
Pegboard	0.09 (-0.06, 0.24)	-0.03 (-0.37, 0.31)
Matching	0.09 (-0.10, 0.27)	0.00 (-0.42, 0.41)
Total	0.08 (-0.07, 0.23)	-0.07 (-0.40, 0.27)
Age 7 years
KBIT verbal	0.35 (0.16, 0.53)	0.80 (0.38, 1.22)
KBIT non-verbal	0.29 (0.05, 0.54)	0.58 (0.01, 1.14)
WRAVMA drawing	-0.08 (-0.33, 0.18)	-0.05 (-0.62, 0.53)
WRAML visual memory	0.04 (-0.02, 0.11)	0.12 (-0.03, 0.27)

Estimates are adjusted for child age, sex, fetal growth, gestational age, race/ethnicity, and primary language; maternal age, parity, smoking status, IQ, depression, employment, and child care at 6 months post-partum; and parental education level, annual household income, and HOME-SF score.

^*No solid foods or non-breast milk liquids (except water)