Table 1.

Characteristics of each substance use group.

	Non-misusers (n = 451)	MJ-only (n = 245)	Alc & MJ (n = 141)	Polysubstance (n = 40)
Substance misuse rates
% Marijuana***	0.0	100.0	59.5	92.5
% Alcohol***	0.0	0.0	100.0	60.0
% Cocaine***	0.0	0.0	4.3	30.0
% Hallucinogens***	0.0	0.0	0.0	25.0
% Street opioids***	0.0	0.0	0.0	20.0
% Prescription stimulants***	0.0	1.2	2.8	22.5
% Prescription opioids***	0.0	0.0	0.7	57.5
% Sedatives***	0.0	4.5	0.0	50.0
Individual demographics
Age M (SD)***	19.2 (2.8)	19.8 (2.4)	21.1 (2.2)	20.4 (2.1)
% Male***	39.4	60.8	57.4	62.5
% African American***	74.6	76.3	63.8	37.5
% Government Aid	74.1	73.7	79.4	72.5
% Violent injury group***	48.9	62.4	61.7	65.0
Other behavioral outcomes
% Unprotected sex***	10.0	18.0	19.1	35.0
% Motor vehicle crash***	3.1	6.5	10.0	15.0
% Serious violence***	52.9	66.9	70.2	82.5
% Weapon victimization***	48.0	66.9	65.9	70.0
% Weapon aggression***	8.8	22.0	24.1	22.5
Alcohol outlets and crime
# On-premises outlets within 1/4 mile M (SD)*	0.3 (0.8)	0.3 (0.8)	0.4 (1.1)	0.7 (1.5)
# Package stores within 1/4 mile M (SD)	0.8 (0.9)	0.9 (0.9)	0.8 (0.9)	0.9 (1.0)
% in top decile violent crime density	19.5	23.7	24.1	12.5
% in top decile drug crime density*	9.7	6.9	15.6	17.5

Notes. Tests in the “other behavioral outcomes” and “alcohol outlets and crime” categories treat substance use categories as ordinal, moving from “Non-misusers” to “Polysubstance”. MJ-only: Marijuana-only misuse class. Alc & MJ: Alcohol/Marijuana misuse class.

^*p < .05

**p < .01

^***p < .001.