Table 2.

Logistic regression estimates for sexual intercourse during the month prior to the survey and sexual intercourse during the month prior to the survey without condom use among high school students in Brazil according to sociodemographic characteristics and drug use (crude and adjusted odds ratios).

	Recent sexual intercourse (N = 16,202)						Sexual intercourse without condom useb (N = 3,551)
	cOR	IC	p-value	aOR	IC	p-value	cOR	IC	p-value	aOR	IC	p-value
Male	1.42	1.27;1.58	<0.0001	1.32	1.18;1.48	<0.0001	0.48	0.40;0.57	<0.0001	0.45	0.36;0.55	<0.0001
Age	1.65	1.55;1.74	<0.0001	1.52	1.43;1.61	<0.0001	1.12	1.04;1.21	0.002	1.17	1.07;1.28	0.001
SESa)	1.03	0.95;1.11	0.40	.	.	.	1.28	1.12;1.44	<0.0001	1.21	1.05;1.39	0.006
Brazilian region	1.01	0.97;1.06	0.43	.	.	.	1.01	0.95;1.07	0.69	.	.	.
Public school	1.52	1.30;1.78	<0.0001	1.59	1.36;1.87	<0.0001	1.07	0.86;1.34	0.51	.	.	.
Recent tobacco	3.88	3.27;4.61	<0.0001	1.69	1.33;2.13	<0.0001	1.43	1.15;1.77	0.001	.	.	.
Recent binge	3.82	3.29;4.43	<0.0001	1.73	1.39;2.14	<0.0001	1.31	1.10;1.55	0.002	1.32	1.07;1.63	0.008
Recent alcohol	3.22	2.88;3.61	<0.0001	1.72	1.46;2.03	<0.0001	1.27	1.08;1.48	0.003	.	.	.
Recent illegal drug	3.89	3.31;4.56	<0.0001	2.02	1.69;2.03	<0.0001	1.37	1.10;1.70	0.004	1.43	1.03;1.90	0.012

^areference group for socioeconomic status was the highest level (A).

^breference group was participants who reported sex with condom use.