Evidence map›Paper›PMID 28919820›Full record

ArticleClinical epidemiology2017

Prediction models for the mortality risk in chronic dialysis patients: a systematic review and independent external validation study.

Chava L Ramspek, Pauline Wm Voskamp, Frans J van Ittersum, Raymond T Krediet, Friedo W Dekker, Merel van Diepen

Abstract read
In one paragraph

Article in Clinical epidemiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing 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

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

  1. Pooled it
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  15. Designing an Implementable Clinical Prediction Model for Near-Term Mortality and Long-Term Survival in Patients on Maintenance Hemodialysis.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2024
    Article
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  17. Observational
  18. Patient-focused outcomes after initiation of dialysis for ESRD: mortality, hospitalization and functional impairment.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2023
    Observational
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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.

Chava L RamspekDepartment of Clinical Epidemiology, Leiden University Medical Center, Leiden.
Pauline Wm VoskampDepartment of Clinical Epidemiology, Leiden University Medical Center, Leiden.
Frans J van IttersumDepartment of Nephrology, VU University Medical Center.
Raymond T KredietDepartment of Nephrology, Academic Medical Center, Amsterdam, The Netherlands.
Friedo W DekkerDepartment of Clinical Epidemiology, Leiden University Medical Center, Leiden.
Merel van DiepenDepartment of Clinical Epidemiology, Leiden University Medical Center, Leiden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn medicine, many more prediction models have been developed than are implemented or used in clinical practice. These models cannot be recommended for clinical use before external validity is established. Though various models to predict mortality in dialysis patients have been published, very few have been validated and none are used in routine clinical practice. The aim of the current study was to identify existing models for predicting mortality in dialysis patients through a review and subsequently to externally validate these models in the same large independent patient cohort, in order to assess and compare their predictive capacities.

methodsA systematic review was performed following the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. To account for missing data, multiple imputation was performed. The original prediction formulae were extracted from selected studies. The probability of death per model was calculated for each individual within the Netherlands Cooperative Study on the Adequacy of Dialysis (NECOSAD). The predictive performance of the models was assessed based on their discrimination and calibration.

resultsIn total, 16 articles were included in the systematic review. External validation was performed in 1,943 dialysis patients from NECOSAD for a total of seven models. The models performed moderately to well in terms of discrimination, with

conclusionOverall, the performance of the models was poorer in the external validation than in the original population, affirming the importance of external validation. Floege et al's models showed the highest predictive performance. The present study is a step forward in the use of a prediction model as a useful tool for nephrologists, using evidence-based medicine that combines individual clinical expertise, patients' choices, and the best available external evidence.

Indexed as

dialysisexternal validationmortalitynephrologyprediction

Identifiers

PMID28919820
PMCPMC5593395

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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.