Table 2.

Participants typology (cluster analysis; N = 60).

	Class 1 n = 14  (23.3%)	Class 2 n = 15  (25.0%)	Class 3 n = 11  (18.3%)	Class 4 n = 20  (33.3%)	Combined N = 60  (100.0%)
Predisposing factors
Age categories n (%)
<30 years old	11 (78.6)	13 (86.7)	4 (36.4)	0 (0.0)	28 (46.7)
30–39  years old	3 (21.4)	2 (13.3)	7 (63.6)	3 (15.0)	15 (25.0)
40  years old and over	0 (0.0)	0 (0.0)	0 (0.0)	17 (85.0)	17 (28.3)
Gender n (%)
Females	12 (85.7)	0 (0.0)	0 (0.0)	3 (15.0)	15 (25.0)
Males	2 (14.3)	15 (100.0)	11 (100.0)	17 (85.0)	45 (75.0)
Education n (%)
Elementary/secondary	13 (92.9)	12 (80.0)	6 (54.5)	13 (65.0)	44 (73.3)
College or over	1 (7.1)	3 (20.0)	5 (45.5)	7 (35.0)	16 (26.7)
Enabling factor
Housing n (%)
Stable housing (home, apartment, room)	9 (64.3)	9 (60.0)	5 (45.5)	2 (10.0)	25 (41.7)
Temporary housing (therapy, prison, shelter)	4 (28.6)	2 (13.3)	0 (0.0)	16 (80.0)	22 (36.7)
Homeless	1 (7.1)	4 (26.7)	6 (54.5)	2 (10.0)	13 (21.7)
Need factors
IV cocaine consumption n (%)	9 (64.3)	15 (100.0)	11 (100.0)	18 (90.0)	53 (88.3)
IV heroine consumption n (%)	9 (64.3)	15 (100.0)	2 (18.2)	3 (15.0)	29 (48.3)
Alcohol consumption n (%)	8 (57.1)	13 (86.7)	4 (36.4)	11 (55.0)	36 (60.0)
Quality of life (SF-36) (mean (SD)
PCS mean (SD)	45.7 (6.9)	46.4 (9.4)	46.7 (9.1)	46.8 (13.4)	46.4 (10.2)
MCS mean (SD)	25.3 (12.1)	37.0 (14.8)	37.5 (8.1)	35.7 (15.3)	33.9 (13.9)
Health service utilization
Methadone program n (%)	5 (35.7)	8 (53.3)	3 (27.3)	4 (20.0)	20 (33.3)
Hepatitis B vaccine n (%)	4 (28.6)	3 (20.0)	0 (0.0)	10 (50.0)	17 (28.3)
Followed up by a family physician n (%)	5 (35.7)	1 (6.7)	0 (0.0)	5 (25.0)	11 (18.3)
Having initiated treatment  n  (%)	2 (14.3)	8 (53.3)	0 (0.0)	11 (55.0)	21 (35.0)