Table 1. Polysubstance use disorders among patients with the three most common substance use disorders.

	Alcohol Use Disorders	Cannabis Use Disorders	Opioid Use Disorders	Any SUD
Variable	n = 26,220	n = 6,787	n = 5,710	n = 45,461
SUD —%
Alcohol	-	32.3	21.6	57.6
Cannabis	8.3	-	12.5	14.9
Opioid	4.7	10.5	-	12.5
Amphetamine	3.4	9.3	6.2	5.8
Cocaine	3.2	6.2	3.9	3.5
Barbiturate	1.6	2.9	9.5	2.1
Hallucinogen	0.1	0.8	0.3	0.2
Polysubstance use disorder —%
>1 SUD	83.7	55.1	63.3	68.5
>2 SUD	12.1	31.8	23.2	9.5

Note. SUD = substance use disorder. SUD diagnoses are not mutually exclusive therefore, between-group comparisons cannot be made.