Table 3.

Latent classes and probability of various risk behaviors for boys

Latent classes	1	2	3	4
	Preadolescent multi-problem	Adolescent multi-problem	Preadolescent substance use	Low risk
Probability of class membership
Urban African American	0.45	0.27	0.13	0.15
Urban European American	0.31	0.00	0.46	0.23
Rural European American	0.18	0.02	0.48	0.32
Item-response probabilities
Very early sexual initiation	0.88	0.45	0.00	0.00
Early sexual initiation	1.00	1.00	0.43	0.11
Very early tobacco use	0.95	0.19	0.87	0.00
Early tobacco use	1.00	0.70	1.00	0.30
Very early alcohol/drug use	0.86	0.13	0.50	0.11
Early alcohol/drug use	1.00	0.64	0.93	0.38
Pregnancy	0.39	0.35	0.06	0.00
Sexually-transmitted disease	0.20	0.03	0.01	0.00