Risk Factors Associated with Unsafe Injection Practices at the First Injection Episode among Intravenous Drug Users in France: Results from PrimInject, an Internet Survey
Table 2
Correlates of risk behaviours at time of first injection: crude odds ratios (cOR), adjusted odds ratios (aOR), and 95% confidence intervals (CI).
Receptive syringe sharing ()
Receptive cooker or cotton sharing ()
cOR
95% CI
value
aOR
95% CI
value
cOR
95% CI
value
aOR
95% CI
value
Female (ref = male)
2.6
[1.0–6.6]
0.040
1.6
[0.6–4.5]
0.387
2.3
[1.1–4.6]
0.020
2.0
[0.9–4.4]
0.095
Current injector at time of data collection (injection in the last 30 days) (ref = no)
1.7
[0.5–5.3]
0.373
0.8
[0.4–1.6]
0.478
Characteristics and circumstances of first injection
Period 2000–2005 (ref = 2006–2010)
1.3
[0.5–3.2]
0.617
1.1
[0.5–2.1]
0.852
Injection before the age of 18 (ref = no)
4.5
[1.8–11.4]
0.002
3.7
[1.3–10.6]
0.015
2.9
[1.4–5.9]
0.004
3.0
[1.3–7.0]
0.011
Injection in a private location (ref = other places (e.g., outdoors and car))
0.5
[0.2–1.4]
0.187
0.7
[0.2–1.9]
0.460
0.6
[0.3–1.2]
0.178
0.9
[0.4–2.1]
0.839
Injection during a party (whatever the context) (ref = no)
2.7
[1.0–7.5]
0.062
1.7
[0.5–5.6]
0.404
3.3
[1.5–7.4]
0.004
2.6
[1.0–6.8]
0.053
Injection not planned (ref = planned)
1.1
[0.4–2.8]
0.855
0.9
[0.3–2.7]
0.898
2.4
[1.1–5.3]
0.031
2.2
[0.9–5.6]
0.088
Injected by another person (ref = no)
3.1
[1.1–8.7]
0.036
3.1
[1.0–9.9]
0.049
3.7
[1.7–8.0]
0.001
3.0
[1.3–7.1]
0.010
Drug given (ref = bought)
1.3
[0.5–3.5]
0.545
0.9
[0.3–2.7]
0.834
2.8
[1.4–5.7]
0.004
2.0
[0.9–4.4]
0.088
Drug injected (ref = heroin)
Cocaine, freebase, and crack
0.8
[0.2–3.1]
0.831
1.0
[0.4–2.7]
0.986
Other opiates
0.8
[0.2–3.1]
1.1
[0.4–2.8]
Other drugs
0.4
[0.0–3.0]
1.2
[0.4–3.6]
values of Wald tests for logistic regressions. ; .
