Table 6 HBV multivariate adjusted OR

Years of injection drug use

Categories based on quartiles (Q1–Q4 below)

Q2 vs. Q1

4.7 (1.6–13.9)

0.005

Q3 vs. Q1

11.3 (3.8–33.2)

<0.001

Q4 vs. Q1

15.7 (5.3–46.5)

<0.001

Ever used someone else's used syringe

Yes vs. No

2.2 (1.2–4.0)

0.005

injected at a shooting gallery

Yes vs. no

2.9 (1.3–6.3)

0.020

Opposite-sex casual sex partners

Yes vs No

0.5 (0.3–0.9)

0.020

Mobility (Moved to Winnipeg in past year)

Yes vs. no

0.3 (0.2–0.7)

0.004

Number of IDU in network who use talwin/ritalin

1–3 vs. none

2.9 (1.4–5.9)

<0.005

4–5 vs none

3.2 (1.4–7.2)

<0.009

Number of IDU in network who have intiated respondent to injection drug use

1 vs. none

0.6 (0.3–1.4)

0.248

2–5 vs. none

0.1 (0.02–0.8)

0.023

Number of IDU in risk network who have injected at a hotel

1 vs. none

1.3 (0.6–2.6)

0.490

2–5 vs. none

2.8 (1.3–5.9)

0.006