Cohort study finds nine times increased overdose risk (fatal plus non-fatal) in patients receiving 100 mg/day for 90 days compared with 1-20 mg/day opioids for chronic non-cancer pain, but wide CI and possibility of unmeasured confounders
Evid Based Nurs. 2010 Apr;13(2):55-6.
doi: 10.1136/ebn1062.