Table 3. PrEP awareness among MSM in Mexico, crude and adjusted prevalence ratios (n = 5,921) April, 2018.

	Crude PR		Adjusted Model: Mexico (n = 5,220*)
	Crude PR	95% CI	Adjusted PR	95% CI
aMSM Risk Index (HIRI-MSM)
Low	1.00	Ref	1.00	Ref
High	1.06	(1.02, 1.11)	1.02	(0.98, 1.06)
Age, years
36+	1.19	(1.12, 1.26)	0.95	(0.88, 1.02)
31–35	1.27	(1.20, 1.35)	1.04	(0.97, 1.11)
25–30	1.22	(1.16, 1.29)	1.05	(0.99, 1.11)
18–24	1.00	Ref	1.00	Ref
Education
Postgraduate	3.32	(2.44, 4.52)	2.86	(2.06, 3.97)
Completed undergraduate	2.94	(2.16, 4.00)	2.64	(1.91, 3.67)
Completing undergraduate	2.30	(1.69, 3.14)	2.23	(1.61, 3.10)
High school or less	1.00	Ref	1.00	Ref
Race (Mexico only)
White/other	1.00	Ref	1	Ref
Indigenous	0.78	(0.64, 0.94)	0.87	(0.73, 1.04)
Income
High	1.23	(1.18, 1.28)	1.16	(1.11, 1.21)
Middle	1.00	Ref	1.00	Ref
Low	0.83	(0.78, 0.87)	0.91	(0.86, 0.96)
GSN Apps for Sex
Never	0.87	(0.80, 0.95)	0.91	(0.83, 0.99)
Sometimes	1.00	Ref	1.00	Ref
Daily	1.05	(1.01, 1.09)	1.02	(0.98, 1.06)
Binge Drinking
No	1.00	Ref	1.00	Ref
Yes	1.06	(1.02, 1.11)	0.99	(0.95, 1.04)
Substance Use
No use	1.00	Ref	1.00	Ref
Erectile dysfunction use only	1.24	(1.16, 1.32)	1.16	(1.08, 1.24)
Marijuana use only	1.20	(1.15, 1.25)	1.17	(1.12, 1.23)
Marijuana and erectile dysfunction use	1.42	(1.34, 1.51)	1.33	(1.24, 1.42)

Abbreviations. PrEP = Pre-Exposure Prophylaxis; MSM = Men who have Sex with Men; HIV = Human Immunodeficiency Virus; PR = Prevalence ratios; HIRI-MSM = HIV Incidence Risk Index for Men who have Sex with Men; GSN = Gay Social Networking

May not add to total because of missing data

^a Adjusted for: age, education, race, income, GSN apps for sex, binge drinking, substance use