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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Psychopharmacology (Berl). 2019 Mar 29;236(9):2641–2652. doi: 10.1007/s00213-019-05234-y

Table 2.

Bivariate Relationships for Derived Behavioral Economic Demand and Discounting Variables

Opioid Demand
Cannabis Demand
Discounting Rate (k)
Intensity Elasticity Intensity Elasticity Money Opioids Cannabis
Age 0.06 0.13 −0.13 0.17 −0.04 −0.01 −0.05
Female 0.07 0.06 −0.12 .26* 0.15 0 0.05
White −0.02 −0.16 0.09 −.30** 0.16 0.12 0.12
College −0.09 0.11 0.02 −0.04 −.26* −.25* −0.2
Income (USD) −.40*** 0.15 −0.14 −0.07 −0.13 0.01 −0.08
Substance Use
Past Month Opioid Use Daysa 1.44 0.62 1.18 0.47 1.13 1.23 1.11
Risky Route of Administration 0.1 −.38*** 0.19 −0.21 −0.06 0.05 0.03
Past Month Cannabis Use Daysa 1.31 0.89 2.08** 0.69 0.95 1.07 1.05
Grams Cannabis/Week 0.19 −0.2 .47*** −.28* 0.08 0.14 0.05
Treatment History
Current Treatment-Seeking 0.16 −0.13 0.14 −0.12 0.05 0.04 0.13
Treatment Plans in Next Year .29** −.25* .23* −0.16 0.19 0.08 0.07
DSM-5 SUD
OUD .52*** −.28* 0.15 −0.05 0.11 .30** 0.2
OUD Criteria Endorsed .40*** −.31** 0.1 −0.06 0.13 .29** .23*
CUD −0.08 0.15 .25* −0.01 −0.02 −0.06 −0.01
CUD Criteria Endorsed −0.01 0.09 .27* −0.08 0.03 0.01 −0.01
AUD 0.05 0 0.03 −0.04 −0.09 0 0.14
AUD Criteria Endorsed 0.11 −0.04 −0.01 −0.04 −0.12 −0.01 0.05
Pain
Average Pain (0–10) .29** −0.06 −0.06 0.07 .27* .22* 0.16
Pain Effect on Daily Life (0–10) .32** −0.11 0.03 0.02 .30** .25* 0.14
Opioid Relief of Pain (0–100) −0.06 0.09 −0.01 0.16 0.18 0.08 0.09

Note. OUD = opioid use disorder; CUD = cannabis use disorder; AUD = alcohol use disorder; Risky Route = preferred use of intranasal, smoked, or injection administration; BP1 = raw breakpoint; BP2 = dichotomous breakpoint (coded 0) versus no breakpoint (coded 1).

a

These variables were evaluated using negative binomial regression given the observation of zero-inflation. Values represent rate ratios.

*

p < .05

**

p < .01

***

p < .001 (bold = statistically significant)