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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Pharmacol Biochem Behav. 2021 Mar 6;204:173169. doi: 10.1016/j.pbb.2021.173169

Table 3.

Characteristics of the stud y sample by reason for last extra-medical use of prescription medications, and factors associated with reason for last extra-medical use of prescription medications among the selected sample, National Survey of Drug Use and Health, 2015–2018.

Sleep - only Sleep and recreational Reason for use (sleep - only reference)
% 95%CI % 95%CI OR 95%CI AOR 95% CI
Gender
Female 58.1 55.1, 61.1 47.7 44.2, 51.2 Ref Ref
Male 41.9 38.9, 44.9 52.3 48.8, 55.9 1.5 1.2, 1.9 1.3 1.0, 1.6
Age
12 to 17
18 to 25 17.2 15.8, 18.8 38.0 34.7, 41.5 6.2 4.3, 8.9 2.8 1.8, 4.4
26 to 34 22.2 20.0, 24.5 28.6 25.7, 31.7 3.6 2.6, 5.1 2.1 1.39, 3.2
35 to 49 24.3 22.3, 26.5 20.5 17.1, 24.0 2.4 1.6, 3.6 1.7 1.06, 2.8
50+ 36.3 32.9, 39.7 12.9 9.4, 17.5 Ref
Self-identified race-ethnicity
Non- Hispanic Whites 75.8 72.9, 78.4 78.0 75.0, 80.8 Ref Ref
Non- Hispanic Blacks 7.8 6.5, 9.3 6.1 4.8, 7.8 0.8 0.6, 1.0 0.6 0.4, 0.8
Hispanics 11.4 9.8, 13.4 10.7 8.5, 13.4 0.9 0.7, 1.3 0.8 0.6, 1.1
Non-Hispanic others 5.0 3.9, 6.4 5.2 3.8, 7.1 1.0 0.7, 1.5 0.6 0.4, 1.0
Population density in area of residence
Rural 4.6 3.7, 5.8 3.6 2.6, 5.0 0.3 0.5, 1.2 0.5 0.3, 0.9
Small metropolitan 39.9 36.8, 43.1 38.7 35.0, 42.6 1.3 0.8, 1.9 0.9 0.7, 1.1
Large metropolitan 55.5 52.3, 57.6 57.7 53.8, 61.5 Ref Ref
Poverty level
Living in poverty 13.7 12.2, 15.2 20.4 17.4, 23.7 Ref Ref
Income up to 2 times federal poverty threshold 18.8 16.9, 20.8 20.7 17.6, 24.2 0.7 0.5, 1.2 0.8 0.5, 1.1
Income more than 2 times federal poverty threshold 67.3 65.2, 69.4 58.4 54.4, 62.2 0.6 0.5, 0.7 0.8 0.6, 1.2
Health insurance coverage
No 12.0 10.4, 13.9 16.8 14.2, 19.8 Ref Ref
Yes 88.0 86.1, 89.6 83.2 80.2, 85.8 0.7 0.5, 0.9 1.3 0.9, 1.7
Past 12-months serious psychological distress
No 68.9 66.5, 71.2 48.6 44.6, 52.6 Ref Ref
Yes 31.1 28.8, 33.5 51.4 47.4, 55.4 2.3 1.9, 2.8 1.7 1.3, 2.2
Self-reported health status
Excellent/Good 82.6 79.91 85.0 84.0 80.5, 87.0 Ref Ref
Fair/Poor 17.4 15.0, 20.1 16.0 13.0, 19.5 0.9 0.7, 1.2 0.7 0.5, 1.1
Missing
Past 12-months tobacco use
No use 50.3 46.9, 53.6 21.1 17.9, 24.6 Ref Ref
Use, no evidence of use disorder 31.0 28.3, 33.8 46.4 43.2, 49.8 3.6 2.8, 4.6 1.7 1.2, 2.2
Nicotine dependence 18.7 16.4, 21.4 32.5 29.5, 35.7 4.1 3.1, 5.5 1.9 1.4, 2.8
Past 12-months alcohol use
No use 13.5 11.3, 16.1 12.9 9.9, 16.7 Ref Ref
Use, no evidence of use disorder 65.8 62.7, 68.9 50.6 46.2, 54.9 0.8 0.6, 1.1 0.5 0.3, 0.7
Alcohol abuse or dependence 20.7 18.0, 23.6 36.5 32.8, 40.4 1.8 1.3, 2.7 0.6 0.4, 1.0
Past 12-months cannabis use
No use 57.9 54.9, 60.8 27.4 23.7, 31.4 Ref Ref
Use, no evidence of use disorder 35.9 33.2, 38.8 53.8 49.4, 58.1 3.2 2.4, 4.1 1.5 1.1, 1.9
Cannabis abuse or dependence 6.2 5.3, 7.2 18.8 15.6, 22.4 6.4 4.8, 8.5 1.9 1.2, 2.8
Past 12-months use of other drugs
No use 82.8 80.8, 85.0 44.4 40.1, 48.8 Ref Ref
Use, no evidence of use disorder 9.1 7.6, 10.9 18.2 15.2, 21.5 3.7 2.8, 4.9 2.3 1.8, 3.1
Abuse or dependence 8.1 6.7, 9.6 37.4 33.8, 41.2 8.7 6.5, 11.6 4.4 3.2, 6.1
Type of drug
Sedatives and/or tranquilizers only 64.9 62.1, 67.6 51.8 47.7, 55.9 Ref Ref
Prescription pain relievers only 29.2 26.6, 32.0 31.6 27.8, 35.7 1.4 1.1, 1.7 1.6 1.3, 2.1
Sedatives, tranquilizers and prescription pain relievers 5.9 4.8, 7.3 16.6 13.7, 20.1 3.5 2.6, 4.8 3.1 2.1, 4.4
Year of survey
2015 26.3 23.8, 29.1 25.6 21.4, 30.0 Ref Ref
2016 26.9 24.1, 29.9 24.5 20.7, 28.7 0.9 0.7, 1.3 0.9 0.6, 1.3
2017 25.4 22.6, 28.3 23.4 20.4, 26.7 1.0 0.7, 1.3 0.9 0.7, 1.3
2018 21.4 18.9, 24.1 26.5 23.2, 30.0 1.3 0.9, 1.8 1.2 0.8, 1.8

Notes: OR = Odds Ratio; aOR = adjusted Odds Ratio.