Table 1.

Summary of studies included in the systematic review.

Study	Study location	Study site	Sample size (N)	Study population
Katie B. et al.21	Greater-Boston area – Massachusetts	Private room at Fenway Health	254	Substance dependent high-risk MTWSM in transactional sex vs. those not in transactional sex
Susan A. et al.23	Baltimore	Baltimore arm of NHBS, BE SURE	399	Men who have sex with men
Sarit A et al.27	New York City	Research Center	160	Men who have sex with men
Catherine E et al.30	Boston	Private interview room at Fenway Health	254	Stimulant vs. alcohol using MTWSM
Sarit A et al.32	New York City	Research Center	491	Men who have sex with men
Sarit A et al.24	New York City	Research Center	305	Men who have sex with men and transgender women
Moctezuma G et al.25	San Antonio, Texas	Research Center	159	Men who have sex with men
Catherine E et al.31	USA	Research Center	4,098	Men who have sex with men
Lisa A et al.26	The Southeastern United States	Gay pride festival	285	Men and transwomen who have sex with men

Study	Study design	Summary of findings
Katie B. et al.21	Cross-sectional	No significant associations found between transactional sex and economic or healthcare-related barriers to PrEP use
Susan A. et al.23	Cross-sectional	Black race and perceived HIV discrimination were significantly associated with awareness and higher PrEP acceptability.
Sarit A et al.27	Cross-sectional qualitative study	Black and Latino MTWSM were more likely to mention HIV related stereotypes and significantly less likely to mention promiscuity than white MTWSM.
Catherine E et al.30	Cross-sectional quantitative assessment	Stimulant using MTWSM were more likely to be concerned about substance use affecting PrEP adherence than alcohol using MTWSM. Similarly, stimulant using MTWSM were less concerned about HIV stigma as a barrier to PrEP uptake than alcohol users.
Sarit A et al.32	Cross-sectional	Black Latino MTWSM were more likely to consider talking to a doctor about their sex life as a barrier to PrEP uptake and were less likely to endorse agency in medical decision-making.
Sarit A et al.24	Cross-sectional	Anticipated HIV stigma was strongly associated with decreased HIV testing.
Moctezuma G et al.25	Cross-sectional	Overall, there is a significant association between PrEP awareness and age, education and income levels.
Catherine E et al.31	Cross-sectional	There is an association between lower structural stigma and decreased odds of condomless anal intercourse and increased odds of having heard of or taken PEP and PrEP.
Lisa A et al.26	Cross-sectional	There is a strong association between PrEP being related to promiscuity and lack of interest in PrEP use.