Table 3.

Demographic characteristics and substance use at baseline for participants.

Characteristics		AMSABa participants (N=402)	Participants in aim 2 (n=36)	Participants in aim 3 (n=123)
Age (years), median (IQR)		21.6 (19.3-23.5)	22.9 (19.8-23.9)	20.7 (18.8-22.8)
Age category (years), n (%)
	15-17	42 (10.4)	4 (11.1)	17 (13.8)
	18-24s	360 (89.6)	32 (88.9)	106 (86.2)
Race, n (%)
	Black/African American	308 (76.6)	30 (83.3)	91 (74.0)
	Black/mixed	28 (7.0)	1 (2.8)	6 (4.9)
	Latino/Black	26 (6.5)	3 (8.3)	12 (9.8)
	Hispanic	30 (7.5)	0 (0.0)	9 (7.3)
	Unknown	10 (2.5)	2 (5.6)	5 (4.1)
Gender, n (%)
	Male	347 (86.3)	30 (83.3)	108 (87.8)
	Transgender	28 (7.0)	3 (8.3)	8 (6.5)
	Female	13 (3.2)	2 (5.6)	1 (0.8)
	Gender nonbinary or nonconforming	13 (3.3)	1 (2.8)	6 (4.8)
Sexual identity, n (%)
	Gay	255 (63.4)	25 (69.4)	86 (69.9)
	Bisexual	88 (21.9)	5 (13.9)	24 (19.5)
	Heterosexual	25 (6.2)	1 (2.8)	5 (4.1)
	Queer	10 (2.5)	0 (0.0)	4 (3.2)
	Pansexual	9 (2.2)	2 (5.6)	2 (1.6)
	Other or questioning or missing	33 (3.2)	3 (8.3)	2 (1.6)
Highest level of education, n (%)
	<High school	89 (22.1)	12 (33.3)	29 (23.6)
	High school graduate	167 (41.5)	13 (36.1)	50 (40.6)
	>High school	145 (36.1)	10 (27.8)	44 (35.8)
Are you employed?, n (%)
	Yes	227 (56.5)	17 (47.2)	71 (57.7)
	No	174 (43.3)	18 (50.0)	52 (42.2)
Been without a place to stay in the last 12 months, n (%)
	No	301 (74.9)	26 (72.2)	103 (83.7)
	Yes	97 (24.1)	9 (25.0)	20 (16.3)
Substance use ever, n (%)
	Tobacco	154 (38.3)	26 (72.2)	35 (28.5)
	Alcohol	312 (77.6)	29 (80.6)	97 (78.9)
	Cannabis	308 (76.6)	30 (83.3)	100 (81.3)
	Any other drugs (amphetamine, cocaine, opioids, sedatives, or inhalants)	88 (21.9)	15 (41.7)	27 (22.0)

^aAMSAB: assigned male sex at birth.