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Published in: Allergy, Asthma & Clinical Immunology 1/2016

Open Access 01-12-2016 | Research

Systematic review of outcome measures in pediatric eosinophilic esophagitis treatment trials

Authors: Tamar Rubin, Jacqueline Clayton, Denise Adams, Rabin Persad, Sunita Vohra

Published in: Allergy, Asthma & Clinical Immunology | Issue 1/2016

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Abstract

Background

Heterogeneity has been noted in the selection and reporting of disease-specific, pediatric outcomes in randomized controlled trials (RCTs). The consequence is invalid results or difficulty comparing results across trials. The primary objective of this systematic review was to assess primary outcome and outcome measure selection and reporting, in pediatric eosinophilic esophagitis (EoE) treatment trials. As secondary objectives, we compared trial disease definition to established concensus guidelines, and the efficacy of current EoE treatments.

Methods

We searched MEDLINE, EMBASE, The Cochrane Library, Cochrane Central Register of Controlled Trials (CENTRAL), and CINAHL since 2001. We also searched clinical trial registries (portal.nihr.ac.uk; clinicaltrials.gov; isrctn.com; and anzctr.org.au) and references of included studies. We included RCTs of EoE treatment in patients 0–18 years. Two authors independently assessed articles.

Results

Eleven studies met inclusion criteria. All identified primary outcomes, however, of 9 unique primary outcomes, only 2 were used in more than one study. In total, 25 unique primary and secondary outcome measures were employed for pediatric EoE treatment trials. Measurement properties and rationale for their selection was rarely provided. Uptake of consensus-based diagnostic criteria was 25 % in trials initiated after 2011. Due to the small number and heterogeneity of studies obtained, no meta-analysis of treatment efficacy could be undertaken. This SR was limited to exclusively pediatric RCTs.

Conclusions

The results of this study confirm the need for a standardized set of core outcomes that are universally reported in pediatric EoE trials. Consistent disease definition and standardized outcome reporting will facilitate meta-analyses across similar trials and inform future clinical decision-making.
Systematic review registration number CRD42013003798
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Metadata
Title
Systematic review of outcome measures in pediatric eosinophilic esophagitis treatment trials
Authors
Tamar Rubin
Jacqueline Clayton
Denise Adams
Rabin Persad
Sunita Vohra
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Allergy, Asthma & Clinical Immunology / Issue 1/2016
Electronic ISSN: 1710-1492
DOI
https://doi.org/10.1186/s13223-016-0144-y

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