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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2012 Apr 4;126(1-2):7–12. doi: 10.1016/j.drugalcdep.2012.03.010

Table 2.

Results of multivariate analysis on the availability of prescribed opioids among ever users (N=1235)

aspirin/oxycodone hydromorphone morphine oxycodone acetaminophen/codeine Methadone
AOR (95%CI) AOR (95%CI) AOR (95%CI) AOR (95%CI) AOR (95%CI) AOR (95%CI)
Calendar year^ Delayed vs. Not avail 1.45 (1.23, 1.70) 1.34 (1.15, 1.57) 1.38 (1.20, 1.58) 1.67 (1.45, 1.92) 1.71 (1.47, 2.00) 1.53 (1.30, 1.79)
Immediate vs. Delayed 1.10 (0.91, 1.32) 1.11 (0.94, 1.31) 1.06 (0.92, 1.23) 1.00 (0.85, 1.19) 0.99 (0.83, 1.17) 0.86 (0.72, 1.03)
Age: <25 - ref
25–35 Delayed vs. Not avail 1.13 (0.68, 1.88) 0.83 (0.50, 1.40) 0.86 (0.49, 1.53)
Immediate vs. Delayed 2.70 (1.58, 4.62) 2.11 (1.18, 3.80) 2.79 (1.54, 5.05)
35–45 Delayed vs. Not avail 1.21 (0.77, 1.90) 0.62 (0.39, 0.99) 0.76 (0.46, 1.25)
Immediate vs. Delayed 3.08 (1.90, 5.00) 2.89 (1.69, 4.94) 3.34 (1.96, 5.67)
>45 Delayed vs. Not avail 0.84 (0.51, 1.39) 0.57 (0.34, 0.96) 0.50 (0.28, 0.89)
Immediate vs. Delayed 3.81 (2.26, 6.42) 3.69 (2.10, 6.48) 5.09 (2.81, 9.24)
No dealing -ref
Drug dealing* Delayed vs. Not avail 1.86 (1.30, 2.65) 1.66 (1.18, 2.33) 1.71 (1.22, 2.41) 1.62 (1.14, 2.31) 1.20 (0.82, 1.76) 1.44 (1.00, 2.07)
Immediate vs. Delayed 1.47 (0.99, 2.17) 1.65 (1.15, 2.37) 1.49 (1.05, 2.11) 1.53 (1.03, 2.28) 1.86 (1.25, 2.78) 1.58 (1.04, 2.38)
Non-daily user - ref
Daily user* Delayed vs. Not avail 0.66 (0.24, 1.78) 1.49 (0.57, 3.84) 0.88 (0.26, 2.94) 1.89 (0.84, 4.28)
Immediate vs. Delayed 3.82 (1.43, 10.21) 4.28 (1.87, 9.78) 9.01 (3.18, 25.53) 2.27 (1.06, 4.87)
VIDUS cohort
ACCESS cohort Delayed vs. Not avail 1.64 (0.99, 2.71) 1.22 (0.76, 1.94) 1.51 (0.90, 2.52)
Immediate vs. Delayed 0.90 (0.52, 1.54) 0.94 (0.58, 1.51) 0.87 (0.50, 1.49)
ARYS cohort Delayed vs. Not avail 1.74 (1.04, 2.93) 1.01 (0.62, 1.67) 1.06 (0.62, 1.81)
Immediate vs. Delayed 0.35 (0.20, 0.62) 0.32 (0.19, 0.54) 0.38 (0.21, 0.69)

Immediate: immediately available (available within 10 minutes); Delayed: delayed availability (available in > 10 minutes); Not avail.: not available. ref: reference group; DTES: Downtown Eastside;

^

Adjusted odds ratios here are interpreted as the increased odds of availability (delayed vs. not available or immediate vs. delayed) in each calendar year.

*

refers to activities in the past six months. Only variables that reached statistical significance at α=0.05 were included in regression models for each substance.