Demographic Correlates of Infant Feeding Practices and Growth Performance in the First Year of Life

Table 2

Weight-for-age z-scores by feeding type at the time of questionnaire completion.

	Total Sample	Breastfeeding	Formula	Mixed	Complementary
Birth	.060; (-.790, 0.625); (n= 145)	270; (-.475, .740); (n =37)	-.110; (-1.045, .310); (n =45)	.090; (-.890, .860); (n =27)	.145; (-.750, .595); (n =36)
1 mo	-.250; (-.908, .398); (n =118)	-0.600; (-.510, .675); (n =25)	-.430; (-.930, .180); (n =39)	-.035; (-1.228, .413); (n =26)	-.140; (-1.145, .470); (n =28)
3 mo	-.015; (-.723, .485); (n =144)	.040; (-.540, .240); (n =35)	-.150; (-.758, .295); (n =46)	.035; (-.748, .553); (n =26)	.110; (-.865, .660); (n =37)
6 mo	.200; (-.300, .860); (n =130)	-.030; (-.660, .470); (n =31)	.100; (-.335, .900); (n =41)	.245; (-.420, 1.413); (n =22)	.405; (-.105, .900); (n =36)
9	.330; (-.200, 1.100); (n =107)	-.035; (-.695, .285); (n =26)	.360; (-.020, 1.120); (n =33)	.894; (-.200, 1.410); (n =19)	.610; (.215, 1.190); (n =29)
12	.495; (-.040, 1.083); (n =80)	-.040; (-.620, .460); (n =19)	.600; (-.175, 1.075); (n =21)	.565; (.020, 1.538); (n =16)	.780; (.243, 1.273); (n =24)

All values expressed as median (IQR) and number of infants.
Growth data for the following time points include the following intervals: birth (0-0.2 months); 1 month (0.5-1.5 months); 3 months (2-4 months); 6 months (5-7 months); 9 months (8-10 months); 12 months (11-13 months).
differences across z-scores stratified by infant feeding type at time of questionnaire completion (p<0.05). No other differences were observed based on Kruskal-Wallis tests.