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. Author manuscript; available in PMC: 2016 Mar 16.
Published in final edited form as: Subst Use Misuse. 2016 Jan 20;51(2):261–267. doi: 10.3109/10826084.2015.1082594

Table 2.

Odds ratios and 95% confidence intervals for predictors of prison drug use during previous six months of incarceration.

Prison time
Less than 12 months 1.00 Reference (CI)
More than 12 months 0.55 0.28 1.09
Gender
Women 1.00 Reference (CI)
Men 2.14 1.03 4.46
Age
18–30 1.00 Reference (CI)
31–45 0.40 0.19 0.86
46–89 0.30 0.11 0.83
Yard
No 1.00 Reference (CI)
Yes 1.67 0.80 3.50
Heroin use historya
No 1.00 Reference (CI)
Yes 2.75 1.19 6.38
Crack use historya
No 1.00 Reference (CI)
Yes 2.09 0.86 4.91
a

These drugs were reportedly used prior to incarceration.