Table 4 Prescription-Adjusted£ Relative Risk of Abusing each Compound
From: Abuse risks and routes of administration of different prescription opioid compounds and formulations
Compound | hydrocodone | IR oxycodone | IR fentanyl | IR hydromorphone | IR morphine | IR oxymorphone | ER oxycodone | ER fentanyl | methadone | ER morphine | ER oxymorphone |
|---|---|---|---|---|---|---|---|---|---|---|---|
hydrocodone | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
IR oxycodone | 2.494Â¥ | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
IR fentanyl | 5.154Â¥ | 2.066Â¥ | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- |
IR hydromorphone | 5.828Â¥ | 2.336Â¥ | 1.131 | 1.000 | -- | -- | -- | -- | -- | -- | -- |
IR morphine | 9.976Â¥ | 3.999Â¥ | 1.936Â¥ | 1.712Â¥ | 1.000 | -- | -- | -- | -- | -- | -- |
IR oxymorphone | 6.781Â¥ | 2.718Â¥ | 1.316 | 1.164 | 0.680Ï„ | 1.000 | -- | -- | -- | -- | -- |
ER oxycodone | 14.520Â¥ | 5.821Â¥ | 2.817Â¥ | 2.492Â¥ | 1.456Â¥ | 2.141Â¥ | 1.000 | -- | -- | -- | -- |
ER fentanyl | 2.846¥ | 1.411τ | 0.552£ | 0.488¥ | 0.285¥ | 0.420¥ | 0.196¥ | 1.000 | -- | -- | -- |
methadone | 18.645Â¥ | 7.475Â¥ | 3.617Â¥ | 3.199Â¥ | 1.869Â¥ | 2.750Â¥ | 1.284Â¥ | 6.551Â¥ | 1.000 | -- | -- |
ER morphine | 5.051Â¥ | 2.025Â¥ | 0.980 | 0.876Ï„ | 0.506Â¥ | 0.745 | 0.348Â¥ | 1.775Â¥ | 0.271Â¥ | 1.000 | -- |
ER oxymorphone | 8.010¥ | 3.211¥ | 1.554τ | 1.374£ | 0.803τ | 1.181 | 0.552¥ | 2.814¥ | 0.430¥ | 1.586¥ | 1.000 |