Table 1.

Socio-demographic characteristics of and associations with syphilis infection among patients living with HIV/AIDS who attend an outpatient clinic in Vitória, Brazil (N = 438)

Variable	Population n (%)	Syphilis infection n (%)	OR (95% CI)
Gender
Male	241 (55.0)	20 (8.3)	5.85 (1.71–20.00)
Female	197 (45.0)	3 (1.5)	1
Race/color
White	187 (42.7)	10 (5.3)	1.03 (0.44–2.41)
Nonwhite	251 (57.3)	13 (5.1)	1
Age (years)
18–39	181 (41.3)	13 (7.1)	1.91 (0.82–4.46)
≥ 40	257 (58.6)	10 (3.8)	1
Years of school
≤ 4	111 (25.3)	2 (1.8)	0.28 (0.06–1.16)
> 4	327 (74.7)	21 (6.4)	1
Marital status
Married	118 (26.9)	4 (3.3)	0.56 (0.19–1.67)
Not married	320 (73.1)	19 (5.9)	1
Family income*
≤ 3 minimum salary	350 (79.9)	14 (4.0)	0.37 (0.15–0.87)
> 3 minimum salary	88 (20.1)	9 (10.2)	1

^*Minimum annual salary is Brazilian reals (BR) 650 = US$320.