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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Drug Alcohol Depend. 2013 May 4;132(3):603–609. doi: 10.1016/j.drugalcdep.2013.04.007

Table 3.

Multilevel results identifying predictors of non-fatal overdose among female injection-drug users (n=653).

Model 1 Model 2 Model 3

Within participant Fixed Effects Parameter OR 95% CI p-value OR 95% CI p-value OR 95% CI p-value
Baseline Year 1-Intercept β00 0.10 0.08,0.12 <0.001 0.04 0.03,0.06 <0.01 0.01 0.01,0.03 <0.01
Finished High School β01 1.49 1.07,2.07 0.02
Gay or Bi β02 1.59 1.12,2.25 0.01
Born outside Canada β03 1.17 0.82,1.67 0.38
Age (≤20 years) β04 2.68 1.14,6.29 0.02
ACCESS Cohort β05 0.86 0.25,3.05 0.82
VIDUS Cohort β06 0.88 0.51,1.51 0.64
Depressive Symptoms β10 2.64 1.99,3.50 <0.01 2.23 1.65,3.00 <0.01
Homeless B20 1.35 0.94,1.93 0.11
Support (ref: none)
 1–2 B30 0.85 0.59,1.23 0.40
 3 or more B40 0.54 0.31,0.93 0.03
Relationship B50 1.08 0.79,1.47 0.63
Welfare B60 1.71 1.20,2.44 <0.01
Jail in the last 6 months B70 1.31 0.77,2.22 0.32
HIV B80 0.71 0.24,2.12 0.54
Alcohol Binge B90 1.59 1.11,2.30 0.01
Heroin B100 1.34 0.95,1.89 0.10
Cocaine β110 1.84 1.29,2.62 <0.01
Speed β120 1.14 0.80,1.62 0.47
Crystal Meth β130 0.89 0.58,1.36 0.58
Morphine β140 1.81 1.24,2.64 <0.01
Help Injecting β150 1.04 0.65,1.66 0.89
Methadone β160 0.87 0.64,1.20 0.40
Year 1 β170 0.64 0.45,0.93 0.02 0.68 0.47,1.00 0.05 0.72 0.48,1.08 0.11
Year 2 β180 0.58 0.42,0.80 <0.01 0.61 0.43,0.87 <0.01 0.63 0.43,0.91 0.01
Year 3 β190 0.45 0.32,0.64 <0.01 0.51 0.35,0.75 <0.01 0.51 0.34,0.77 <0.01
Year 4 β200 0.32 0.20,0.50 <0.01 0.38 0.23,0.63 <0.01 0.51 0.29,0.88 0.02