Table 2.

Logistic regression analysis for factors associated with HIV infection among male patients attending an STI clinic in Puerto Rico, 2009–2010.

Variable	POR*Crude (95% CI)	POR†Adjusted (95% CI)
Age group
<45 years	1.0	1.0
≥45 years	3.3 (1.7, 6.3)	2.3 (0.9, 5.7)
IDU
Yes	7.0 (3.1, 15.7)	8.1 (3.0, 21.8)
No	1.0	1.0
MSM
Yes	4.0 (2.1,7.6)	5.3 (2.3, 11.9)
No	1.0	1.0
Syphilis
Yes	2.2 (1.1, 4.6)	1.5 (0.6, 3.4)
No	1.0	1.0

^*Model 1: Crude model,

^†Model 2: Multivariate analysis