Table 2.

Bivariate association with self-perception of assisting with future injection drug use initiation among who have provided previous injection drug initiation assistance by site (PRIMER; n = 865), n (%)

	Tijuana, Mexico (n = 73)			San Diego, USA (n = 86)			Vancouver, Canada (n = 707)
	Would Initiate (n = 24)	Would not initiate (n = 49)	P	Would Initiate (n = 14)	Would not initiate (n = 72)	P	Would Initiate (n = 125)	Would not initiate (n = 582)	P
Age, years, mean (SD)	40.9 (9.5)	38.3 (11.2)	0.50	50.1 (14.1)	43.6 (12.1)	0.09	40 (13)	43.9 (12.9)	<0.01
Sex
Men	18 (36.7)	31 (63.3)	0.43	11 (18.6)	48 (81.4)	0.85	94 (20.3)	370 (79.7)	0.02
Women	6 (25.0)	18 (75.0)		3 (13.0)	20 (87.0)		31 (12.5)	210 (87.5)
Transgender	-	-		0 (0)	3 (100)		-	-
Drug injection frequency, last 6 months
None	1 (20.0)	4 (80.0)	>0.99	2 (6.3)	30 (93.7)	<0.05	19 (8.1)	216 (91.9)	<0.001
Less than daily	1 (33.3)	2 (66.7)		9 (30.0)	21 (70.0)		41 (18.9)	176 (81.1)
Daily	22 (33.9)	43 (66.1)		3 (12.5)	21 (87.5)		65 (25.5)	190 (74.5)
Relationship to past initiates
Family member/intimate partner	0 (0)	1 (100)	0.01	0 (0)	10 (100)	0.36	7 (8.2)	78 (91.8)	0.06
Friend	15 (26.8)	41 (73.2)		9 (19.2)	38 (80.9)		87 (18.6)	381 (81.4)
Other	7 (77.8)	2 (22.2)		0 (0)	6 (100)		11 (21.6)	40 (78.4)
More than one relationship	2 (28.6)	5 (71.4)		5 (21.7)	18 (78.3)		19 (20.9)	72 (79.1)
Reason for initiating
Personal reason	4 (26.7)	11 (73.3)	0.67	2 (40.0)	3 (60.0)	0.29	7 (15.2)	39 (84.8)	0.29
Interpersonal reason	14 (26.7)	31 (68.9)		4 (12.9)	27 (87.1)		98 (17.0)	477 (83.0)
More than one reason	5 (41.7)	7 (58.3)		8 (16.0)	42 (84.0)		17 (24.6)	52 (75.4)

Row percentages add up to 100.

PRIMER, Preventing Injecting by Modifying Existing Responses.