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We thank Chedid and Camilleri for their carefully composed letter,1 and are delighted to have provoked further debate about the relative efficacy of drugs acting on µ-opioid receptors in the treatment of opioid-induced constipation (OIC) with our network meta-analysis.2 In fact, we had also written to another journal concerning a recent network meta-analysis examining this issue,3 which had reported erroneously that subcutaneous methylnaltrexone appeared to perform better than other medications for OIC.4 The authors confirmed in their reply to our letter that they had mistakenly included redundant data from duplicate publications of the same two randomised-controlled trials (RCTs) of methylnaltrexone in this meta-analysis,5 likely accounting for their findings.4 …
Contributors ACF and NEB drafted the letter and approved the final draft of the manuscript.
Competing interests None declared.
Patient consent Not required.
Provenance and peer review Not commissioned; internally peer reviewed.
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