Evidence map›Paper›PMID 34036171›Full record

ArticleTransplantation direct2021

Frailty and Kidney Transplantation: A Systematic Review and Meta-analysis.

Evelien E Quint, Donika Zogaj, Louise B D Banning, Stan Benjamens, Coby Annema, Stephan J L Bakker, Gertrude J Nieuwenhuijs-Moeke, Dorry L Segev, Mara A McAdams-DeMarco, Robert A Pol

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Transplantation direct, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07181096 (Study of Frailty Among Renal Transplant Recipients, Its Relation to Chronic Renal Allograft Dysfunction), which is not on this map. Cited by 51 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 4 pooled it
11.8field-weighted citation impact, top 1% 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.

NCT07181096 narecruitingnot on this mapstarted 2025, after this paper: background citation

Study of Frailty Among Renal Transplant Recipients, Its Relation to Chronic Renal Allograft Dysfunction

TypeinterventionalSponsorAlexandria UniversityRan2025 to 2026Enrolled80ConditionsFrailty, Renal TransplantArmsassessment of frailty
3 · Its place in the literature

Who cites it

51 citing papers in PubMed, 4 syntheses or guidelines pooled it, 87 citations in OpenAlex.

  1. Pooled it
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  5. [Journal Club].Zeitschrift fur Gerontologie und Geriatrie · 2026
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  18. Frailty Prevalence and Characterization Among Kidney Transplant Candidates in Spain: A Multicenter Study.Transplant international : official journal of the European Society for Organ Transplantation · 2025
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  19. Frailty in Kidney Disease: A Comprehensive Review to Advance Its Clinical and Research Applications.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2025
    Review
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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

10 authors at 4 institutions in 2 countries.

Evelien E QuintDivision of Transplantation Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Donika ZogajDivision of Transplantation Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Louise B D BanningDivision of Transplantation Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Stan BenjamensDivision of Transplantation Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Coby AnnemaDivision of Nursing Science, Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Stephan J L BakkerDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Gertrude J Nieuwenhuijs-MoekeDepartment of Anesthesiology, University Medical Centre Groningen, Groningen, The Netherlands.
Dorry L SegevDepartment of Surgery, Johns Hopkins School of Medicine, Baltimore, MD.
Mara A McAdams-DeMarcoDepartment of Surgery, Johns Hopkins School of Medicine, Baltimore, MD.
Robert A PolDivision of Transplantation Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
University Medical Center Groningen · NLUniversity of Groningen · NLJohns Hopkins Medicine · USJohns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Frailty is a multidimensional condition and is the result of the body's age-associated decline in physical, cognitive, physiological, and immune reserves. The aim of this systematic review is to assess the quality of evidence of the included studies, determine the prevalence of frailty among kidney transplant candidates, and evaluate the relationship between frailty and associated patient characteristics and outcomes after kidney transplantation.

methodsA systematic search was performed for relevant literature on frailty and kidney transplantation. This was followed by a meta-analysis for patient characteristics and outcomes reported by a minimum of 2 studies including mean age, gender, mean body mass index, type of kidney transplantation, dialysis, previous kidney transplantation, comorbidities, hypertension, race, preemptive kidney transplantation, delayed graft function, and length of stay.

resultsA total of 18 studies were included in the systematic review and 14 of those studies were suitable for meta-analysis. The overall pooled prevalence of frailty before transplantation was estimated at 17.1% (95% confidence interval [CI], 15.4-18.7). Frailty was significantly associated with higher age (mean difference, 3.6; 95% CI, 1.4-5.9), lower rate of preemptive transplantation (relative risk, 0.60; 95% CI, 0.4-0.9), longer duration of delayed graft function (relative risk, 1.80; 95% CI, 1.1-3.0), and length of stay longer than 2 wk (odds ratio, 1.64; 95% CI, 1.2-2.3).

conclusionsOne in 6 kidney transplant recipients is frail before transplantation. The presence of frailty is associated with lower rates of preemptive transplantation, older recipient age, higher rates of delayed graft function, and longer length of stay. Future research is required to explore the association of frailty with other adverse outcomes after kidney transplantation and the effects of intervention programs to improve the different frailty domains.

Identifiers

PMID34036171
PMCPMC8133203
OpenAlexW3163078323

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.