Table 2.

Associated factors to HIV coinfection in 15–24-year-old patients diagnosed of gonorrhoea, syphilis or venereal lymphogranuloma in Barcelona (N=830)

Variables	ORa*	95% CI
Age
Each more 1 year	1.13	0.96 to 1.28
Education
Secondary or university	1.00
Primary or less	1.03	0.47 to 2.26
Missing	0.95	0.49 to 1.84
Country of birth
Spain	1.00
Not Spain	1.37	0.79 to 2.38
Missing	1.01	0.35 to 2.90
Sexual behaviour
MSW	1.00
MSM	14.14	3.34 to 59.91
Missing (men)	4.91	0.96 to 25.13
Women	1.40	0.19 to 10.12
STI diagnoses in the previous 12  months
No	1.00
Yes	2.06	1.13 to 3.77
Number of sexual partners in the previous 12 months
One to three	1.00
Four to six	1.33	0.34 to 5.16
Seven to ten	0.89	0.21 to 3.84
>10	4.11	1.53 to 11.01
Missing	2.33	0.89 to 6.10

*This model was adjusted for all the listed variables in the table: Age, education, country of birth, sexual behaviour, previous 12 months STI diagnoses and number of sexual partners (last 12 months).

MSM, men who have sex with men; MSW, men who have sex with women only; ORa, adjusted odds ratio; STI, sexually transmitted infection.