Evidence map›Paper›PMID 23186991›Full record

ReviewJournal of clinical epidemiology2013

Overall similarity and consistency assessment scores are not sufficiently accurate for predicting discrepancy between direct and indirect comparison estimates.

Tengbin Xiong, Sheetal Parekh-Bhurke, Yoon K Loke, Asmaa Abdelhamid, Alex J Sutton, Alison J Eastwood, Richard Holland, Yen-Fu Chen, Tanya Walsh, Anne-Marie Glenny and 1 more

Abstract readComparative StudyReview
In one paragraph

Review in Journal of clinical epidemiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Tengbin XiongNorwich Medical School, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK.
Sheetal Parekh-Bhurke
Yoon K Loke
Asmaa Abdelhamid
Alex J Sutton
Alison J Eastwood
Richard Holland
Yen-Fu Chen
Tanya Walsh
Anne-Marie Glenny
Fujian Song

Funding

Medical Research Council G0701607
6 · The paper itself

Abstract

objectivesIndirect comparison methods have been increasingly used to assess the effectiveness of different interventions comparatively. This study evaluated a Trial Similarity and Evidence Consistency Assessment (TSECA) framework for assessing key assumptions underlying the validity of indirect comparisons. STUDY DESIGN AND

settingWe applied the TSECA framework to 94 Cochrane Systematic Reviews that provided data to compare two interventions by both direct and indirect comparisons. Using the TSECA framework, two reviewers independently assessed and scored trial similarity and evidence consistency. A detailed case study provided further insight into the usefulness and limitations of the framework proposed.

resultsTrial similarity and evidence consistency scores obtained using the assessment framework were not associated with statistically significant inconsistency between direct and indirect estimates. The case study illustrated that the assessment framework could be used to identify potentially important differences in participants, interventions, and outcome measures between different sets of trials in the indirect comparison.

conclusionAlthough the overall trial similarity and evidence consistency scores are unlikely to be sufficiently accurate for predicting inconsistency between direct and indirect estimates, the assessment framework proposed in this study can be a useful tool for identifying between-trial differences that may threaten the validity of indirect treatment comparisons.

Indexed as

BiasEvidence-Based MedicineGuideline AdherenceHumansPractice Guidelines as TopicPredictive Value of TestsQuality Assurance, Health CareRandomized Controlled Trials as TopicReproducibility of ResultsSensitivity and Specificity

Identifiers

PMID23186991
PMCPMC3537077

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.