Table 1.

Demographic Characteristics of Subjects

	Total	Experimental	Control
Age (%)
≤14 years	7.8	12.1	1.7
15–17 years	50.4	55.2	43.6
18–20 years	41.8	32.7	54.7
Total	100.0	100.0	100.0
Parity (%)
0	61.3	65.5	55.6
1+	38.7	34.5	44.4
Total	100.0	100.0	100.0
Marital Status
Not Married (%)	98.6	99.4	97.4
Years of Schooling
Mean	11.3	11.0	11.7
Range	8–14	8–14	9–14
African American Ethnicity (%)	93.1	95.7	89.4
N	282	165	117