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

CI = Confidence interval

Day et al. Harm Reduction Journal 2005 2:2   doi:10.1186/1477-7517-2-2