Table 2.

HCV seroprevalence ratios obtained by pooling three cross-sectional surveys of men who have sex with men conducted in Montréal, Québec (Canada) (2005, 2009, 2018)

Covariates	Univariable prevalence ratio (95% CI)	Multivariable prevalence ratio (95% CI)
History of IDU	18.2 (12.2 to 27.2)	8.0 (5.5 to 11.5)
Age
<30	1	1
30–44	2.1 (1.4 to 3.2)	2.2 (1.5 to 3.3)
≥45	1.9 (0.9 to 4.1)	2.5 (1.6 to 3.9)
Transactional sex (P6M)	4.6 (3.0 to 7.1)	2.1 (1.7 to 2.5)
HIV seropositivity	2.9 (1.8 to 4.8)	1.7 (1.3 to 2.3)
Sexual orientation other than gay/homosexual	5.4 (3.2 to 9.2)	1.6 (1.3 to 2.1)
Income ≥$C30 000 in the past year	0.3 (0.2 to 0.4)	0.5 (0.4 to 0.7)
Born outside of Canada	0.2 (0.0 to 0.6)	0.5 (0.3 to 0.9)
Year of data collection
2005	1	1
2009	0.4 (0.2 to 0.8)	0.5 (0.3 to 0.8)
2018	0.9 (0.3 to 2.4)	1.0 (0.7 to 1.4)
Education level higher than high school	0.2 (0.1 to 0.3)	0.4 (0.3 to 0.6)
Self-identified Indigenous ethnicity or family background	1.1 (0.1 to 23.7)	1.4 (0.4 to 4.5)
Reactive syphilis serology	0.9 (0.4 to 1.9)	1.1 (0.7 to 1.6)
First language other than French/English	0.4 (0.1 to 1.0)	1.0 (0.5 to 2.0)
>5 male sexual partners (P6M)	0.8 (0.5 to 1.4)	1.0 (0.7 to 1.3)
Group sex in the P6M	0.8 (0.5 to 1.2)	0.8 (0.6 to 1.2)
CAS with a man of serodiscordant/unknown HIV status (P6M)	0.7 (0.3 to 1.6)	0.7 (0.5 to 1.1)

CAS, condomless anal sex; HCV, hepatitis C virus; IDU, injection drug use; P6M, past 6 months.