Table 2.

Characteristics of drugs used and socio-demographics, stratified by latent class (N = 120,706).

Variable	Total	C1 (42.5%)	C2 (27.3%)	C3 (11.0%)	C4 (10.5%)	C5 (8.0%)
Sex
Male	61.4	68.1	59.8	67.7	44.2	41.6
Female	38.4	31.8	40	32	55.5	58.1
Age group
11–14 years	0.5	0	0.1	0	3.9	1.4
15–24 years	14.4	12.9	9.7	13.7	30.3	18.9
25–34 years	31.1	39.2	26.2	33.5	17.3	17.5
35–44 years	19.2	20.7	17.9	21.5	15.5	15.6
45–54 years	15.5	14.7	16.9	16.8	12.2	17
55–64 years	12.4	9.8	16.4	12	10.2	16.5
65–74 years	4.4	1.9	7.8	2.1	6	7.9
75–84 years	1.3	0.1	2.8	0	2.7	3.3
85 years or older	0.7	0.2	1.5	0	1.2	1.3
Drug type
Heroin	45.8	100	0	29.8	0	0
Non-heroin, opioid	39.7	12.3	100	46.9	2	17.2
Tobacco	20.0	15.9	11.7	51.1	14.1	19.2
Benzodiazepines	9.4	0.2	0	11.2	1	100
Psychoactive/psychotropic	7.3	5.4	5.6	17.9	3.8	7.3
Cocaine	6.4	1.3	0.7	36.9	2.1	0.8
Alcohol	6.2	2.6	3.6	16.9	6.7	13.8
Marijuana	5.8	0.1	0.1	25.1	16.5	4.4
Other stimulants	5.6	0.6	0.3	22.6	18.1	1.5
Other depressants/sedatives	4.8	0.1	1.1	9.6	22.8	10.1
Anti-depressants	4.8	0	0.3	1.7	41.6	3.2
Hallucinogen	0.9	0	0	1.5	6.1	0
Inhalants	0.03	0	0	0.1	0	0
Number of Drug Types
1	62.8	67.3	77.6	10.4	77.2	46.0
2	24.2	25.8	20.3	26.9	17.5	34.0
≥3	13.0	6.9	2.1	62.8	5.4	20.0

Note: Class 1: Mostly heroin overdose; Class 2: Mostly non-heroin opioid overdose/use; Class 3: Opioid, polysubstance; Class 4: Female, younger (< 25), other non-opioid drugs; Class 5: female, older (> 55 years), mostly benzodiazepine