Table 1.

Distribution of behavioral variables according to sexual orientation (n = 3,818).

Variables	Heterosexual (N = 3392)		Homosexual bisexual (n = 426)		p ∗ value	OR	95% CI
	N	%	N	%
STI in the last 12 months
Yes	433	12.8	98	23.0	<0.0001	0.49	0.38–0.62
No	2959	87.2	328	77.0
Alcohol in the last 12 months
Yes	1952	57.5	292	68.5	<0.0001	0.62	0.50–0.77
No	1440	42.5	134	31.5
Tobacco in the last 12 months
Yes	66	1.9	12	2.8	0.231	0.68	0.36–1.27
No	3326	98.1	414	97.2
Illegal drugs in the last 12 months
Yes	325	9.6	38	8.9	0.661	1.08	0.76–1.53
No	3067	90.4	388	91.1
Sexual partners in the last 12 months
One	1641	48.4	85	20.0	<0.0001	3.76	2.93–4.81
Multiple	1751	51.6	341	80.0
Used condoms for sex in the last 12 months
Yes	423	12.5	81	19.0	<0.0001	0.60	0.46–0.78
No	2969	87.5	345	81.0
HIV serology
Reactive	122	3.6	55	12.9	<0.0001	0.25	0.18–0.35
Non-reactive	3270	96.4	371	87.1

N = number; % = percentage; p^∗ = Pearson's chi-square; OR = odds ratio; 95% CI = 95% confidence interval.