ArticleBMJ open2025
Evidence map of liver surgery: study protocol of a living systematic review.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe amount of scientific data on liver surgery is exploding. There is a critical unmet need to develop tools that will facilitate navigating the literature and offer easy, fast and accurate access to data with a high level of evidence. Evidence maps (EM) combining living systematic reviews (SR) and user-friendly synthesis with graphs and figures were developed for this purpose in other medical fields and showed promising results but remain yet unavailable in liver surgery. The present study protocol aims to generate an EM in liver surgery, gathering randomised clinical trials (RCT) and SR. METHODS AND ANALYSIS: A systematic search will be conducted in the Cochrane Central Register of Controlled Trials, Web of Science, Embase and Medline to identify all RCT and SR concerning liver surgery. RCT and SR will be classified in research topics. Selected endpoints will be extracted and meta-analysed. Results will be freely available for patients, clinicians and researchers via a web-based evidence map platform. EM and meta-analyses (MA) will be updated at regular intervals. ETHICS AND DISSEMINATION: Including publicly available data, this type of study design did not require ethical committee approval. EM displays the required properties to facilitate literature search and to get a rapid overview of the current evidence, an unavailable tool in liver surgery, to date. Generating such an aid may considerably help patients, clinicians and researchers in many aspects: accessing accurate data, helping in decision-making and identifying gaps in the field. On completion of the project, results will be published, freely available via www.evidencemap.surgery and permanently updated. PROSPERO REGISTRATION NUMBER: CRD42023489201 (https://www.crd.york.ac.uk/prospero/).
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Registered trials
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.