Initiation to heroin injecting among heroin users in Sydney, Australia: cross sectional survey

Table 1 Characteristics of those who first injected heroin, using multivariate logistic regression

Characteristic	No. participants	%1^st injected	Adjusted odds ratio	95% CI	P
Age
31+	184	77	-	-
25–30	106	60	0.48	0.28–0.83	.008
≤ 24	96	54	0.34	0.19–0.61	<.001
Ethnicity
Australian	269	67	-	-	-
ATSI	69	74	1.18	0.61–2.26	ns
Other Australians	61	36	0.30	0.16–0.55	<.001
Age 1st injected
≥ 18	164	77	-	-
<18	234	56	0.63	0.39–1.02	.059

ISSN: 1477-7517