Table 1.

Baseline sample characteristics for population and selected evaluation subsample groups

	Birth population vs. eligible & interviewed evaluation subsamples			Interviewed comparison vs. intervention subsamples
	Birth population (n = 1428) Mean	Eligible sample (n = 1243) Mean (p-value)	Participating sample (n = 518) Mean (p-value)	Comparison participating sample (n = 126) Mean	Intervention participating sample (n = 392) Mean (p-value)
Infant birth characteristics
Number of birth risks	0.32	0.31 (0.78)	0.31(0.80)	0.33	0.30 (0.77)
Low birth weight, (%)	10.71	10.14 (0.63)	9.65 (0.50)	10.32	9.44 (0.77)
Premature birth, (%)	11.20	10.86 (0.78)	10.81 (0.81)	12.70	10.20 (0.43)
Any birth complications, (%)	9.96	10.07 (0.92)	10.44 (0.75)	9.52	10.74 (0.70)
Infant female, (%)	50.56	50.20 (0.85)	51.74 (0.65)	57.94	49.74 (0.11)
Infant age in months (M, SD)	–	–	–	5.76, 1.12	5.86, 0.99 (0.33)
Birthing parent characteristics
Multiple birth, (%)	1.89	1.77 (0.82)	2.12 (0.74)	3.97	1.53 (0.10)
Mother medicaid at birth (%)	62.41	60.35 (0.28)	60.35 (0.41)	67.46	58.06 (0.06)
Teen parent, (%)	8.89	8.69 (0.85)	9.27 (0.80)	9.52	9.18 (0.91)
Mother education	3.84	3.91 (0.23)	4.02 (0.23)	3.80	4.09 (0.07)
Mother is married, (%)	44.74	46.82 (0.28)	48.55 (0.14)	38.89	51.66 (0.01)
Birthing parent race/ethnicity
White, (%)	47.20	49.48 (0.24)	48.84 (0.52)	46.03	49.74 (0.47)
Black, (%)	39.99	38.54 (0.44)	40.54 (0.83)	42.06	40.05 (0.69)
Hispanic/Latinx, (%)	9.87	9.25 (0.59)	8.88 (0.51)	9.52	8.67 (0.77)
Other, (%)	2.94	2.74 (0.75)	1.74 (0.14)	2.38	1.53 (0.53)

Column 2 is contrasted with column 1, with significance level in parentheses. Column 3 is contrasted with column 1, with significance level in parentheses. Column 5 is contrasted with column 4, with significance level in parentheses