TABLE 4.

RDS‐adjusted rate ratios (aRR) of recent HIV seroconversions (n = 31) for selected factors ^a among HIV‐negative participants, controlling for age and city (n = 2008)

	HIV seroconversions	aRR	95% CI
Models with a single risk factor
Sociodemographics
Age <30 years old	22	9.5	[3.3;26.9]
French or English Canadian ethnocultural group	14	0.5	[0.2;1.1]
Born outside of Canada	11	1.5	[0.7;3.1]
Immigrated to Canada in the past two years b	1	—	—
High school degree or less	6	1.0	[0.4;2.7]
Annual income <30 K	17	0.7	[0.3;1.4]
Financial strain (current) a	—	1.7	[0.9;3.2]
Gay (vs. queer or other sexual orientation)	28	1.2	[0.5;2.9]
Sex partners (past 6 months)
No main sex partner	25	3.2	[1.2;8.3]
Non monogamous relationship b	31	—	—
New anal sex partner	13	1.0	[0.5;2.0]
One or more HIV+ sex partners	19	3.9	[1.8;8.3]
Number of sex partners
6 to 10 (vs. 5 or less)	9	4.4	[1.7;11.4]
11 or more (vs. 5 or less)	19	7.4	[3.0;18.2]
Number of anal sex partners
6 to 10 (vs. 5 or less)	10	5.4	[2.2;13.4]
11 or more (vs. 5 or less)	15	10.5	[4.5;24.6]
Two or more anal sex partners b	30	–	–
Methods of finding sexual partners (past 6 months)
Attendance of a bath house or sex club	17	2.5	[1.2;5.3]
Attendance of a group sex event	15	3.4	[1.6;7.3]
Attendance of a barebacking party	10	9.2	[3.9;21.8]
Attendance of a party n’ play event	10	6.3	[2.1;19.3]
Accepting money or drugs for sex	9	3.7	[1.4;10.0]
Use of the internet to connect with other men (at least once a day)	18	6.8	[2.9;15.7]
Substance use (past 6 months)
Crystal methamphetamine during sex c	11	8.0	[3.1;20.8]
Gamma hydroxybutyrate during sex c	8	4.1	[1.5;11.1]
Alkyl nitrites during sex c	17	3.8	[1.8;8.1]
Chemsex d	13	4.0	[1.7;9.1]
Injection drug use (IDU)	5	9.8	[2.9;33.0]
Problematic alcohol use b	2	—	—
Problematic use of any drug (other than alcohol or tobacco)	5	1.7	[0.5;6.0]
STBBI detected (at any visit)
C. trachomatis infection	5	5.9	[2.2;15.6]
N. gonorrhoeae infection	7	8.0	[3.4;19.0]
Recent or current syphilis infection b , e	3	—	—
HIRI MSM score
11 to 20 (vs. 10 or less)	5	2.7	[0.8;9.1]
21 or more (vs. 10 or less)	24	8.4	[2.7;26.6]
Model with multiple risk factors
Age <30 years old	22	9.1	[3.2;26.2]
Number of anal sex partners (past 6 months)
6 to 10 (vs. 5 or less)	10	5.3	[2.1;13.5]
11 or more (vs. 5 or less)	15	8.4	[3.4;20.9]
Use of crystal methamphetamine during sex c	11	4.2	[1.5;11.6]

^a The concept of “cases observed for a given level of a variable” does not apply for a continuous variable.

^b Too few HIV cases were observed in at least one of the levels of the variable for reliable estimation.

^c Consumption in the 2 h before or during sex with at least one of the last five partners participants reported having sex with in the past 6 months.

^d Crystal methamphetamine, GHB (gammahydroxybutyrate), ecstasy/MDMA (3,4‐methylenedioxy‐methamphetamine), or ketamine consumption in the 2 h before or during sex with at least one of the last five partners participants reported having sex with in the past 6 months.

^e Reactive anti‐treponemal antibody test and rapid plasma reagin titer of 1/16+at baseline visit or new/reinfection at prospective visits.