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. Author manuscript; available in PMC: 2020 Aug 25.
Published in final edited form as: Subst Use Misuse. 2019 Aug 25;54(14):2387–2399. doi: 10.1080/10826084.2019.1650775

Appendix Table 3.

Sensitivity Analysis Using Categorical Variables for the Availability of Dispensaries and DATA-2000 waivered providers

Inpatient Stays
Related to Opioid
Use Disorder
(N= 264,013)
Inpatient Stays
Related to Opioid
Overdose
(N= 264,013 )
Observation Stay
Related to
Opioid Use Disorder
(N= 12,621)
OR (95% CI)
Zip-code Characteristics
Number of recreational marijuana dispensaries
0 Ref Ref Ref
1 1.19** (1.06, 1.35) 1.04 (0.92, 1.17) 1.07 (0.76, 1.50)
2+ 1.14 (0.97, 1.36) 1.05 (0.90, 1.22) 1.21 (0.82, 1.79)
Number of medical marijuana dispensaries
0 Ref Ref Ref
1 1.00 (0.87, 1.16) 1.03 (0.89, 1.18) 0.49** (0.29, 0.81)
2 0.99 (0.85, 1.15) 1.06 (0.92, 1.21) 0.69 (0.46, 1.04)
Number of DATA-2000 waivered providers
0 Ref Ref Ref
1 1.10 (0.96, 1.26) 1.07 (0.93, 1.22) 1.28 (0.86, 1.90)
2+ 1.04 (0.93, 1.16) 0.98 (0.87, 1.09) 1.10 (0.81, 1.51)
Spatially Lagged Rates of Hospital Stays Related to Opioids 1.39*** (1.30, 1.50) 0.86 (0.58, 1.26) 3.71* (1.27, 10.87)
Proportion of population under age 21 1.18 (0.45, 3.05) 0.66 (0.23, 1.95) 0.036* (0.0019, 0.69)
Racial/ethnic composition
 Predominantly non-Hispanic white Ref Ref
 Predominantly racial/ethnic minorities 0.79* (0.63, 0.99) 0.88 (0.69, 1.12) 0.93 (0.46, 1.88)
Median household income 1.00 (1.00, 1.00) 1.00** (0.99, 1.00) 1.01** (1.00, 1.02)
Number of tobacco and alcohol outlets per square mile 1.00 (1.00, 1.01) 1.00 (1.00, 1.01) 1.01* (1.00, 1.02)
Population density per square mile 1.05*** (1.03, 1.07) 1.02 (0.99, 1.04) 0.98 (0.92, 1.05)
Individual Characteristics
Sex
 Male Ref Ref
 Female 0.82*** (0.79, 0.86) 1.01 (0.93, 1.10) 0.85 (0.66, 1.09)
Age
 65+ Ref Ref Ref
 50-64 3.88*** (3.64, 4.14) 1.39*** (1.23, 1.57) 5.07*** (3.26, 7.90)
 35-49 5.05*** (4.69, 5.43) 1.11 (0.95, 1.30) 5.86*** (3.57, 9.60)
 21-34 6.01*** (5.58, 6.48) 0.77** (0.65, 0.92) 8.48*** (5.06, 14.19)
 12-20 1.99*** (1.72, 2.30) 0.67* (0.49, 0.91) 0.40 (0.053, 3.03)
Race/ethnicity
 Non-Hispanic white Ref Ref Ref
 Hispanic 0.34*** (0.31, 0.38) 0.73** (0.59, 0.90) 0.38** (0.18, 0.79)
 Non-Hispanic black 0.64*** (0.59, 0.70) 1.03 (0.85, 1.24) 1.38 (0.72, 2.64)
 Other non-Hispanic minority 0.61*** (0.56, 0.66) 0.64*** (0.53, 0.79) 1.61* (1.05, 2.46)
 Unknown 0.67*** (0.61, 0.74) 0.64*** (0.51, 0.81) 0.34* (0.12, 0.92)
Primary payer for healthcare
 Private health insurance Ref Ref
 Medicare 3.15*** (2.96, 3.35) 1.46*** (1.28, 1.65) 2.35*** (1.57, 3.52)
 Medicaid 3.25*** (3.08, 3.42) 1.42*** (1.25, 1.61) 2.91*** (2.12, 4.01)
 Other 1.94*** (1.76, 2.14) 1.27* (1.02, 1.58) 0.81 (0.39, 1.72)

* p<.05; ** p<.01; *** p<.001; † Median household income was divided by 1000; ‡ Population density per square mile was divided by 1000. ORs and corresponding 95% CI were in bold if p<0.05. We used multilevel logistic regressions with random intercepts at zip code level.