Understanding and managing
prescription opioid abuse is one of the major challenges in
pain management worldwide. The relationships between prescriptive usage of
opioids and reported morbidity at the national level, using data from the
Drug Abuse Warning Network (DAWN), were examined. When the major prescription
opioids were evaluated, the association between prescriptive medical use in kilograms and reported morbidity, as measured by a ratio between the two, was similar for the intermediate-potency
opioids (
hydrocodone,
methadone,
oxycodone, and
morphine). This rate was much lower for low-potency
opioids (
codeine,
meperidine,
pentazocine, and
propoxyphene) and much greater for high-potency
opioids (
hydromorphone and
fentanyl). When the drugs were adjusted by potency (relative to
morphine), the rates of reported morbidity per kilogram of
morphine equivalent
opioid in prescriptive usage were similar among the
opioids. Using the potency-adjusted total kilograms of
opioid in prescriptive use for all the
opioids evaluated, there was a statistically significant association (r(2)=0.9791) with the reported morbidity for prescription
analgesics as a class, as measured in the DAWN system. These data suggest that non-medical use of
opioids is predictable based on potency and extent of prescriptive use.