Table 5:

Logistic regression analysis of factors associated with assisted injection for skill at injecting (N=336)

	Odds ratio 95% Confidence Interval	Adjusted odds ratio 95% Confidence Interval
Age
<30	Referent	Referent
30–39	3.47 (1.25, 9.65)	4.18 (1.37, 12.79)
40–49	0.52 (0.24, 1.12)	0.65 (0.28, 1.55)
50 or older	0.70 (0.32, 1.52)	1.01 (0.42, 2.46)
Violence in the last 6 months
Punched	2.91 (1.58, 5.38)	2.57 (1.28, 5.17)
Provided injection assistance in
NECK	3.62 (2.05, 6.36)	2.84 (1.52, 5.30)
Provided injection assistance in
HAND	2.54 (1.34, 4.81)	2.19 (1.06, 4.50)
Motivation for assisted injection
Injury prevention	4.10 (2.32, 7.22)	3.18 (1.71, 5.93)
Intervention assignment
Experimental	1.57 (0.90, 2.74)	1.77 (0.94, 3.34)