Home-based intervention for non-Hispanic black families finds no significant difference in infant size or growth: results from the Mothers & Others randomized controlled trial

Table 2 Distribution of anthropometrics by treatment group and infant age

	Distribution of the Outcomes				Effects of the Intervention		Effects of the Intervention Accounting for Covariates^a
	Obesity Prevention Group		Injury Prevention Group
	Mean (SD)	Median (IQR)	Mean (SD)	Median (IQR)	β (95% CI)	P	β (95% CI)	P
WAZ^b
Birth	0.00 (0.91)	−0.06 (1.42)	0.05 (0.89)	0.03 (1.36)	−.05 (−.25, .16)	.66	−.05 (−.27, .16)	.64
3 months	−0.22 (1.03)	−0.28 (1.45)	− 0.08 (0.89)	−0.12 (1.21)	−.14 (−.39, .11)	.28	−.09 (−.37, .20)	.56
6 months	0.05 (0.93)	0.07 (1.27)	0.13 (1.06)	0.22 (1.25)	−.07 (−.34, .19)	.59	−.11 (−.39, .17)	.45
9 months	0.28 (1.05)	0.30 (1.33)	0.37 (0.98)	0.44 (1.21)	−.10 (−.37, .18)	.50	−.00 (−.32, .32)	.99
12 months	0.31 (1.02)	0.19 (1.26)	0.44 (1.00)	0.44 (1.11)	−.13 (−.42, .15)	.36	−.07 (−.40, .25)	.65
15 months	0.39 (1.04)	0.20 (1.34)	0.53 (1.07)	0.56 (1.15)	−.14 (−.44, .16)	.35	−.10 (−.45, .24)	.55
WLZ^c
Birth	−1.10 (1.80)	−1.03 (2.41)	− 1.07 (1.67)	− 1.01 (2.01)	−.04 (−.45, .38)	.86	−.94 (−.52, .33)	.66
3 months	0.43 (1.33)	0.21 (1.07)	0.40 (1.63)	0.28 (1.45)	.22 (−.09, .53)	.17	.19 (−.15, .54)	.27
6 months	0.58 (1.13)	0.35 (1.22)	0.51 (1.64)	0.41 (1.20)	.23 (−.08, .55)	.15	.22 (−.11, .56)	.19
9 months	0.68 (1.09)	0.55 (1.02)	0.58 (1.51)	0.56 (1.27)	.12 (−.16, .41)	.40	.23 (−.10, .55)	.17
12 months	0.58 (1.11)	0.57 (1.07)	0.46 (1.37)	0.52 (1.19)	.01 (−.30, .32)	.96	.03 (−.32, .37)	.87
15 months	0.62 (1.11)	0.56 (1.16)	0.51 (1.22)	0.57 (1.27)	.06 (−.27, .38)	.73	.10 (−.27, .47)	.60

^aModels were adjusted for variables found to be significantly associated with the completion of any home visit and included maternal age, pre-pregnancy BMI, and marital status. Each model after birth was also adjusted for breastfeeding, e.g. the 3-month model included a variable for continued breastfeeding at 3 months, the 6-month model included a variable for continued breastfeeding at 6 months, etc. ^bWeight-for-age Z-score. ^cWeight-for-length Z-score

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