Background
Opioid analgesic and benzodiazepine use in individuals with opioid
use disorders (OUDs) can increase the risk for medical consequences and
relapse. Little is known about rates of use of these medications or
prescribing patterns among communities of prescribers.
Aims
To examine rates of prescribing to Medicaid-enrollees in the calendar
year after an OUD diagnosis, and to examine individual, county, and provider
community factors associated with such prescribing.
Methods
We used 2008 Medicaid claims data from 12 states to identify
enrollees diagnosed with OUDs, and 2009 claims data to identify rates of
prescribing of each drug. We used social network analysis to identify
provider communities and multivariate regression analyses to identify
patient, county, and provider community level factors associated with
prescribing these drugs. We also examined variation in rates of prescribing
across provider communities.
Results
Among Medicaid-enrollees identified with an OUD, 45% filled a
prescription for an opioid analgesic, 37% for a benzodiazepine, and
21% for both in the year following their diagnosis. Females, older
individuals, individuals with pain syndromes, and individuals residing in
counties with higher rates of poverty were more likely to fill
prescriptions. Prescribing rates varied substantially across provider
communities, with rates in the highest quartile of prescribing communities
over 2.5 times the rates in the lowest prescribing communities.
Discussion
Prescribing opioid analgesics and benzodiazepines to individuals
diagnosed with OUDs may increase risk of relapse and overdose. Interventions
should be considered that target provider communities with the highest rates
of prescribing and individuals at highest risk.