Table 1.

Baseline characteristics among mSTUDY participants

	Total (n=515) a
	M	SD
Socio-demographic
Age	31.3	6.9
	n	% b
Race/ethnicity
Black	220	42.7
Latinx	186	36.1
Other	40	7.8
White	69	13.4
Social adversity
Unemployment	226	45.2
Housing instability (past 6 mos.)	182	35.3
Ever incarcerated	204	39.6
Intimate partner violence (past 12 mos.)	92	18.3
Substance use (past 6 mos.)
Methamphetamine	227	44.1
Cocaine/crack	141	27.4
Heroin	22	4.3
Cannabis	302	58.6
Poppers	193	37.5
Binge drinking	305	59.2
Cigarette smoking (current)	160	32.3
Sexual risk behaviors and STIs
New anal intercourse partner (past 6 mos.)	389	75.5
Concurrent sex partners (past 6 mos.)	234	49.2
Exchange sex (past 3 mos.)	100	19.8
Positive STI test (chlamydia, gonorrhea, and/or syphilis)	98	19.1
HIV-related factors
HIV-serostatus
HIV-negative	254	49.3
HIV-positive	261	50.7
Detectable viral load (> 20 c/mL) a	124	49.0
PrEP use, past 6 mos. b	59	22.6
Chronic health conditions
Cardiovascular condition	99	19.2
Hepatic abnormality	34	6.6
Renal condition	35	6.8
Neurological condition	71	13.8
Psychological condition	256	49.7

Abbreviations: M = means; SD = standard deviations

^aSum of cells may not equal total due to missing responses.

^bColumn percentages reported.

^aMeasured in HIV-positive participants only

^bMeasured in HIV-negative participants only

^cp-value for Fisher’s exact test