Table 5.
Odds ratio estimates and confidence intervals for variables in the final predictive model of opioid misuse.
| 95% Confidence Interval | |||
|---|---|---|---|
| Variable | Odds Ratio | Lower | Upper |
| Demographics | |||
| 1. Age | 0.97 | 0.96 | 0.97 |
| 2. Gender (male) | 2.31 | 2.07 | 2.57 |
| 3. Employee (vs. dependent/spouse) | 0.79 | 0.70 | 0.89 |
|
Diagnoses | |||
| 4. Any anxiety disorder | 1.28 | 1.12 | 1.46 |
| 5. Unipolar mood disorder | 2.01 | 1.77 | 2.28 |
| 6. Bipolar disorder | 0.55 | 0.45 | 0.67 |
| 7. Other mood disorder | 0.96 | 0.72 | 1.29 |
| 8. Adjustment disorder | 1.21 | 1.03 | 1.43 |
| 9. Any pain disorder | 1.28 | 0.82 | 2.00 |
| 10. Any somatoform disorder | 1.19 | 0.62 | 2.31 |
| 11. Pain disorder due to a general med. condition | 1.16 | 1.02 | 1.33 |
| 12. Chronic pain diagnosis | 0.79 | 0.71 | 0.90 |
| 13. Any psychotic disorder | 0.49 | 0.32 | 0.75 |
| 14. Antisocial personality disorder | 0.03 | 0.002 | 0.42 |
| 15. Borderline personality disorder | 0.26 | 0.12 | 0.58 |
| 16. Alcohol dependence | 2.63 | 2.20 | 3.16 |
| 17. Barbiturate or sedative/hypnotic dependence | 12.07 | 8.25 | 17.64 |
| 18. Cocaine dependence | 2.12 | 1.57 | 2.88 |
| 19. Cannabis dependence | 1.52 | 1.08 | 2.14 |
| 20. Amphetamine dependence | 0.70 | 0.41 | 1.20 |
| 21. Hallucinogen dependence | 5.34 | 1.36 | 20.94 |
| 22. Other unspecified drug dependence | 1.36 | 0.31 | 19.94 |
| 23. Combinations of drug dependence excluding opioid | 11.60 | 6.85 | 19.60 |
| 24. Unspecified drug dependence | 64.46 | 38.60 | 107.66 |
| 25. Alcohol abuse | 0.63 | 0.50 | 0.79 |
| 26. Tobacco dependence | 1.48 | 1.24 | 1.77 |
| 27. Cannabis abuse | 1.12 | 0.76 | 1.66 |
| 28. Barbiturate or sedative/hypnotic abuse | 2.81 | 1.54 | 5.14 |
| 29. Cocaine abuse | 1.55 | 1.05 | 2.28 |
| 30. Amphetamine abuse | 1.10 | 0.55 | 2.21 |
| 31. Other unspecified drug abuse | 7.42 | 4.64 | 11.86 |
| 32. Malingering | 0.05 | 0.01 | 0.40 |
|
Opioid Variables | |||
| 33. Long-acting opioids dispensed | 1.42 | 1.34 | 1.50 |
| 34. Short-acting opioids dispensed | 3.44 | 3.18 | 3.72 |
|
Health Service Utilization | |||
| 35. Emergency department encounters | 1.04 | 1.02 | 1.05 |
| 36. Inpatient mental health admissions | 1.32 | 1.16 | 1.50 |
| 37. Inpatient mental health days | 1.02 | 1.01 | 1.03 |
| 38. Outpatient mental health visits | 1.04 | 1.04 | 1.05 |
|
Interactions identified via CHAID (numbers correspond to vars. above) | |||
| 24 × 37 | 0.02 | <.001 | 2.13 |
| 34 × 37 | 2.24 | 2.11 | 2.37 |
| 24 × 36 | 21.68 | 0.18 | >999 |
| 23 × 24 | 0.07 | 0.04 | 0.12 |
| 24 × 34 | 0.67 | 0.56 | 0.80 |
| 17 × 23 | 0.26 | 0.13 | 0.53 |
| 23 × 34 | 0.75 | 0.61 | 0.93 |
| 17 × 31 | 0.47 | 0.23 | 0.99 |
| 31 × 34 | 0.81 | 0.67 | 0.98 |
| 1 × 34 | 0.94 | 0.88 | 1.00 |