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Table 2 Odds of invasive bacterial infection in ALIVE participants with cessation and reduced intensity injection

From: Reducing injection intensity is associated with decreased risk for invasive bacterial infection among high-frequency injection drug users

Variables

3-month observationa

6-month observationa

Unadjusted

Adjustedb

Unadjusted

Adjustedb

OR (95% CI)

p

OR (95% CI)

p

OR (95% CI)

p

OR (95% CI)

p

Age (per 10 year)

1.18 (0.95–1.46)

0.135

1.30 (1.03–1.66)

0.029

1.21 (1.04–1.42)

0.012

1.34 (1.13–1.59)

0.001

Gender (female)

1.26 (0.86–1.84)

0.229

1.74 (1.17–2.57)

0.043

1.50 (1.14–1.97)

0.003

1.76 (1.34–2.32)

< 0.001

HIV status by CD4 count

 HIV negative > 500 cells/mm3

1.0 (Ref)

3.13 (1.72–5.70)

<0.001

1.0 (Ref)

3.71 (2.03–6.79)

< 0.001

1.0 (Ref)

3.01 (1.97-4.59)

< 0.001

1.0 (Ref)

3.52 (2.3–5.39)

< 0.001

 200–499 cells/mm3

5.13 (3.21–8.19)

< 0.001

5.81 (3.63–9.29)

< 0.001

4.96 (3.57–6.88)

< 0.001

5.52 (3.97–7.69)

< 0.001

 < 200 cells/mm3

11.06 (6.98–17.55)

< 0.001

11.55 (7.23–18.43)

< 0.001

10.31 (7.41–14.3)

< 0.001

10.39 (7.44–14.5)

< 0.001

Injection intensity

 High intensity

1.0 (Ref)

 

1.0 (Ref)

 

1.0 (Ref)

 

1.0 (Ref)

 

 Reduced intensity

0.74 (0.50–1.09)

0.126

0.64 (0.43–0.96)

0.031

0.81 (0.62–1.06)

0.121

0.74 (0.56–0.98)

0.035

 Cessation of injection

0.62 (0.36–1.07)

0.084

0.46 (0.25–0.84)

0.012

0.65 (0.45–0.95)

0.025

0.54 (0.36–0.81)

0.003

  1. CI confidence interval, Ref reference
  2. aData are odds ratios (95% confidence intervals)
  3. bEach model adjusted for race, non-injection drug use, alcohol use, and tobacco use