Poster Presentation, American Pain Society, Austin Texas, May 19, 2011.
Original Research Article
Addition of Objective Data to Identify Risk for Medication Misuse and Abuse: The Inconsistency Score
Version of Record online: 15 AUG 2013
Wiley Periodicals, Inc
Volume 14, Issue 12, pages 1900–1907, December 2013
How to Cite
Hamill-Ruth, R. J., Larriviere, K. and McMasters, M. G. (2013), Addition of Objective Data to Identify Risk for Medication Misuse and Abuse: The Inconsistency Score. Pain Medicine, 14: 1900–1907. doi: 10.1111/pme.12221
Robin J. Hamill-Ruth, MD—consultant to FBI, DEA, DOJ.
Mary McMasters—consultant to FBI, DEA.
Kyly Larriviere—no conflicts to report.
- Issue online: 11 DEC 2013
- Version of Record online: 15 AUG 2013
- Urine Drug Testing;
- Prescription Monitoring Program;
- Drug Abuse;
- Drug Misuse;
- Risk Mitigation;
- Chronic Pain
To identify and quantify the rate of aberrant drug-taking behaviors using objective data.
Institutional Review Board-approved anonymous, voluntary, quality improvement project.
University-based, multidisciplinary pain management center.
Consecutive initial visit patients.
Patients were interviewed, asked to provide a urine sample, and filled out a brief questionnaire about recent prescription, over-the-counter, and illicit drug use. Discrepancies between patient report (PQ), the Virginia State prescription monitoring program (PMP), referring physician records (MRs), and the point-of-care urine drug screen (POC UDS) results were scored from 0 (none) to a maximum of 2 points (2+ discrepancies) for each potential comparator between data sets. Maximum potential inconsistency score (IS) was 16 points.
Two hundred nine patients were interviewed to yield 118 specimens. Mean age of participants was 48.2 years (22–83 year); 65.3% were female. IS scores ranged from 1 to 11, and 52.5% of the patients had an IS ≥ 3. Higher IS scores correlated with higher numbers of pharmacies, prescribing physicians, prescriptions on the PMP, and presence of illicit substances in the urine. Addition of either POC UDS or PMP to PQ and MR increased identification of inconsistencies by >400%, and PMP plus UDS by >900%.
Patient report and the medical record are inadequate to screen for aberrant drug-related behaviors. Addition of PMP and POC UDS contribute significantly to identification of inconsistencies through higher IS scores and differentiate patients at higher risk of medication misuse, abuse, or diversion. Comparison of multiple sources of objective information provides better insight into inconsistencies of report and behavior, and may assist in more appropriate and safer prescribing decisions.