Table 2.

Bivariate and multivariate analysis of factors associated with unprotected sex in the last 6 months among socially marginalized men, Peru. (N = 4040, subjects = 2053)

Risk factor	PRa	p value	95 % CIb	PR(a)a	p value	95 % CIb
Alcohol use prior to sex
Neither partner nor participant used alcohol prior to sex	Ref.			Ref.
Either partner or participant used alcohol prior to sex	1.18e	0.001	1.13–1.23	1.13	0.001	1.09–1.17
Both partners used alcohol prior to sex	1.09	0.001	1.04–1.14	1.14	0.001	1.09–1.19
Drug use prior to sex
No	Ref.			Ref.
Yes	1.07	0.003	1.02–1.12	1.03	0.159	0.99–1.08
Agecd	1.00	0.018	1.00–1.01	1.00	0.959	1.00–1.01
Age at sexual debutcd	1.00	0.517	0.99–1.01	0.99	0.192	0.98–1.00
Graduated from high schoold
No	Ref.			Ref.
Yes	0.97	0.111	0.93–1.01	0.99	0.713	0.95–1.03
Marital status
Married/living with spouse	Ref.			Ref.
Widowed, separated or divorced	0.88	0.010	0.79–0.97	0.95	0.245	0.86–1.04
Single	0.84	0.001	0.81–0.87	0.93	0.001	0.88–0.97
Employment status
Permanent work	Ref.			Ref.
Occasional work	1.02	0.572	0.96–1.08	1.03	0.291	0.98–1.08
Support from family or friends	1.00	0.900	0.93–1.06	1.06	0.085	0.99–1.13
# partners, last 6 months
1	Ref.			Ref.
2	0.93	0.001	0.89–0.96	1.00	0.937	0.96–1.04
3+	0.82	0.001	0.79–0.86	0.94	0.007	0.91–0.98
Time in relationship
<6 months	Ref.			Ref.
>6 months	1.27	0.001	1.22–1.31	1.12	0.001	1.08–1.16
Type of partner
Stable partner (spouse/girlfriend)	Ref.			Ref.
Occasional partner (casual partner/sexual work/another)	0.76	0.001	0.73–0.79	0.81	0.001	0.78–0.85
Sex of partner
Woman	Ref.			Ref.
Man	0.83	0.001	0.76–0.91	0.94	0.150	0.86–1.02

^aPR Prevalence ratio, PR(a) Adjusted prevalence ratio

^bCI Confidence Interval

^cAge and age at sexual debut are included as continuous variables

^dAge, age at sexual debut, graduated from high school, marital status and employment status are variables at the individual level

^eThe data in bold indicate statistical significance, p value < 0.05