Evidence map›Paper›PMID 29535377›Full record

SynthesisScientific reports2018

Bioimpedance-defined overhydration predicts survival in end stage kidney failure (ESKF): systematic review and subgroup meta-analysis.

Matthew Tabinor, Emma Elphick, Michael Dudson, Chun Shing Kwok, Mark Lambie, Simon J Davies

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 4 pooled it
7.5field-weighted citation impact, top 2% 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

65 citing papers in PubMed, 4 syntheses or guidelines pooled it, 122 citations in OpenAlex.

  1. Pooled it
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  6. Trial
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  10. Bioelectrical Impedance in Pediatric Dialysis: Clinical Applications, Limitations, and Opportunities.Hemodialysis international. International Symposium on Home Hemodialysis · 2026
    Review
  11. Article
  12. Observational
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5 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Matthew TabinorInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK.ORCID 0000-0003-3362-2239
Emma ElphickInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK.
Michael DudsonInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK.
Chun Shing KwokInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK.ORCID 0000-0001-7047-1586
Mark LambieInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK.
Simon J DaviesInstitute for Applied Clinical Sciences, Keele University, Newcastle-under-Lyme, UK. simonj.davies55@gmail.com.ORCID 0000-0001-5127-4755
Keele University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Both overhydration and comorbidity predict mortality in end-stage kidney failure (ESKF) but it is not clear whether these are independent of one another. We undertook a systematic review of studies reporting outcomes in adult dialysis patients in which comorbidity and overhydration, quantified by whole body bioimpedance (BI), were reported. PubMed, EMBASE, PsychInfo and the Cochrane trial database were searched (1990-2017). Independent reviewers appraised studies including methodological quality (assessed using QUIPS). Primary outcome was mortality, with secondary outcomes including hospitalisation and cardiovascular events. Of 4028 citations identified, 46 matched inclusion criteria (42 cohorts; 60790 patients; 8187 deaths; 95% haemodialysis/5% peritoneal dialysis). BI measures included phase angle/BI vector (41%), overhydration index (39%) and extra:intracellular water ratio (20%). 38 of 42 cohorts had multivariable survival analyses (MVSA) adjusting for age (92%), gender (66%), diabetes (63%), albumin (58%), inflammation (CRP/IL6-37%), non-BI nutritional markers (24%) and echocardiographic data (8%). BI-defined overhydration (BI-OH) independently predicted mortality in 32 observational cohorts. Meta-analysis revealed overhydration >15% (HR 2.28, 95% CI 1.56-3.34, P < 0.001) and a 1-degree decrease in phase angle (HR 1.74, 95% CI 1.37-2.21, P < 0.001) predicted mortality. BI-OH predicts mortality in dialysis patients independent of the influence of comorbidity.

Indexed as

AdultAgedElectric ImpedanceFemaleHospitalizationHumansKidney Failure, ChronicMaleMiddle AgedRenal DialysisSurvival AnalysisWater-Electrolyte Imbalance

Identifiers

PMID29535377
PMCPMC5849723
OpenAlexW2792999984

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.