Table 3.

Independent predictors of HIV infection in women voluntarily screened for syphilis in San Francisco County Jail, 1999–2001 (N = 1,577)

Variable	Adjusted odds ratioa	95% CI	p value
Age group
29 years or younger	1.0	na	na
30–39 years	5.0	2.2–11.4	<0.01
40 years or older	4.2	1.1–15.9	0.06
Race/ethnicity
White	2.4	0.6–10.2	0.2
African American	3.7	1.1–12.6	0.03
Other	1.0	na	na
Injection drug use in last 6 months	2.8	0.9–8.5	0.06

^aAdjusted for other variables listed in the table