Risk of gastrointestinal effects with COX-2 inhibitors and NSAIDs: What does evidence from randomised trials show about celecoxib?BMJ 2005; 331 doi: https://doi.org/10.1136/bmj.331.7530.1474-c (Published 15 December 2005) Cite this as: BMJ 2005;331:1474
- Jonathan L Underhill, assistant director, education and development (firstname.lastname@example.org)
- National Prescribing Centre, The Infirmary, Liverpool L69 3GF
EDITOR—With reference to Feczko's comments (first letter in this cluster), Hippisley-Cox et al's study was an observational study.1 This occupies a lower place on the hierarchy of evidence than large, prospective randomised controlled trials measuring outcomes that are important to patients (patient oriented evidence that matters, or POEMs).
The only POEM evidence for …