Table 2.

Maternal and Infant Characteristics for Control and Intervention Groups

	Control (n = 64)		Intervention (n = 67)
	Mean	SD	Mean	SD	p value
Maternal characteristics
Age at entry, yr	27.7	5.3	27.1	5.4	.17
Education, yr	11.0	1.8	11.0	1.5	.83
Age 1st pregnancy, yr	19.2	4.5	18.2	4.3	.53
Days of drug use during last 6 mo of pregnancy
Cigarettes	141.6	72.8	140.6	73.3	.94
Alcohol	10.0	18.6	11.6	28.4	.71
Marijuana	6.2	18.8	11.7	36.4	.29
Cocaine	21.4	39.6	33.3	48.7	.13
Heroin	33.1	55.4	45.8	66.9	.25
Methadone	30.6	64.3	23.9	57.1	.54

	N	%	N	%
Single	61	95	60	90	.32
Unemployed	62	97	67	100	.23
African-American	62	97	62	93	.44

	Mean	SD	Mean	SD
Infant characteristics
BW	2830.7	466.7	2755.1	412.5	.33
HC, cm	32.9	1.4	32.9	2.5	.97
Birth length, cm	48.4	3.2	47.7	2.9	.21
Gestational age, wk	38.9	2.1	38.3	2.3	.13
1-min Apgar	8.1	1.0	8.0	1.1	.43
5-min Apgar	9.0	0.3	8.9	0.5	.15

	N	%	N	%
Gender, Male	34	53	29	43	.29
Preterm, <37 wk	7	11	13	19	.13

BW, birth weight; HC, head circumference; SD, standard deviation.