Table 3. Logistic regression for impact of school years in risk for HIV.

	OR	P	CI 95%
Model 1	0.73	0.007	(0.58-0.92)
Model 2	0.79	0.04	(0.63-0.98)
Model 3	0.74	0.02	(0.57-0.96)

Model 1 was univariate analysis (HIV vs school years). Model 2 was adjusted to sex work and use of injectable drugs and Model 3 was adjusted to sex work, use of injectable drugs, physical aggression and verbal aggression.