Evidence map›Paper›PMID 29572396›Full record

SynthesisBMJ open2018

Are methodological quality and completeness of reporting associated with citation-based measures of publication impact? A secondary analysis of a systematic review of dementia biomarker studies.

Shona Mackinnon, Bogna A Drozdowska, Michael Hamilton, Anna H Noel-Storr, Rupert McShane, Terry Quinn

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in BMJ open, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
3.2field-weighted citation impact, top 7% of its field
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

5 citing papers in PubMed, 23 citations in OpenAlex.

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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

6 authors at 3 institutions in 1 country.

Shona MackinnonSchool of Medicine, University of Glasgow, Glasgow, UK.
Bogna A DrozdowskaInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
Michael HamiltonUniversity of Strathclyde, Glasgow, UK.
Anna H Noel-StorrCochrane Dementia and Cognitive Improvement Group, Oxford, UK.
Rupert McShaneCochrane Dementia and Cognitive Improvement Group, Oxford, UK.
Terry QuinnInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
University of Glasgow · GBCochrane · GBUniversity of Strathclyde · GB

Funding

Department of Health 10/4001/05
6 · The paper itself

Abstract

objectiveTo determine whether methodological and reporting quality are associated with surrogate measures of publication impact in the field of dementia biomarker studies.

methodsWe assessed dementia biomarker studies included in a previous systematic review in terms of methodological and reporting quality using the Quality Assessment of Diagnostic Accuracy Studies (QUADAS) and Standards for Reporting of Diagnostic Accuracy (STARD), respectively. We extracted additional study and journal-related data from each publication to account for factors shown to be associated with impact in previous research. We explored associations between potential determinants and measures of publication impact in univariable and stepwise multivariable linear regression analyses. OUTCOME MEASURES: We aimed to collect data on four measures of publication impact: two traditional measures-average number of citations per year and 5-year impact factor of the publishing journal and two alternative measures-the Altmetric Attention Score and counts of electronic downloads.

resultsThe systematic review included 142 studies. Due to limited data, Altmetric Attention Scores and electronic downloads were excluded from the analysis, leaving traditional metrics as the only analysed outcome measures. We found no relationship between QUADAS and traditional metrics. Citation rates were independently associated with 5-year journal impact factor (β=0.42; p<0.001), journal subject area (β=0.39; p<0.001), number of years since publication (β=-0.29; p<0.001) and STARD (β=0.13; p<0.05). Independent determinants of 5-year journal impact factor were citation rates (β=0.45; p<0.001), statement on conflict of interest (β=0.22; p<0.01) and baseline sample size (β=0.15; p<0.05).

conclusionsCitation rates and 5-year journal impact factor appear to measure different dimensions of impact. Citation rates were weakly associated with completeness of reporting, while neither traditional metric was related to methodological rigour. Our results suggest that high publication usage and journal outlet is not a guarantee of quality and readers should critically appraise all papers regardless of presumed impact.

Indexed as

BiomarkersBibliometricsConflict of InterestDementiaHumansJournal Impact FactorPeriodicals as TopicSample SizeBiomarkersbiomarkercitationsdementiajournal impact factorQUADASSTARD

Identifiers

PMID29572396
PMCPMC5875624
OpenAlexW2794377008

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.