Answers are grounded in this paper and cite their sources.
This qualitative systematic review of the clinical methodology used in randomised, controlled trials of oral opioids (morphine, hydromorphone, oxycodone) for cancer pain underlines the difficulties of good pain research in palliative care. The current literature lacks placebo-controlled superiority trials. Recommendations for future research are discussed.
No takes yet. Share an insight, caveat, or question.
Bell et al. (2006) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: