Evidence map›Paper›PMID 40189799›Full record

SynthesisAlzheimer's & dementia : the journal of the Alzheimer's Association2025

Limited generalizability and high risk of bias in multivariable models predicting conversion risk from mild cognitive impairment to dementia: A systematic review.

Robin Jeanna Vermeulen, Vebjørn Andersson, Jimmy Banken, Gerjon Hannink, Tim Martin Govers, Maroeska Mariet Rovers, Marcel Gerardus Maria Olde Rikkert

Abstract readSystematic Review
In one paragraph

Synthesis in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Mild cognitive impairment-to-Alzheimer's dementia progression risk: the contribution of the Interceptor project.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  8. Article
  9. Observational
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
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

7 authors.

Robin Jeanna VermeulenDepartment of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands.ORCID 0000-0003-3054-8459
Vebjørn AnderssonDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Jimmy BankenDepartment of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands.
Gerjon HanninkDepartment of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands.
Tim Martin GoversDepartment of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands.
Maroeska Mariet RoversDepartment of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands.
Marcel Gerardus Maria Olde RikkertRadboudumc Alzheimer Centre, Department of Geriatrics, Radboud University Medical Centre, Nijmegen, The Netherlands.

Funding

European Union's Horizon 2020 964220
6 · The paper itself

Abstract

Prediction models have been developed to identify mild cognitive impairment (MCI) cases likely to convert to dementia. This systematic review summarizes multi-source prediction models for MCI to dementia conversion. PubMed and Embase were searched for model development and validation studies from inception up to January 18 2024. Models were assessed for included predictors, predictive performance, risk of bias, and generalizability. 62 studies were included: 41 machine learning models, 11 regression models, and 5 disease state indexes. The number of predictors in the models ranged from 2 to 60; magnetic resonance imaging (MRI) and cognitive scores were the most common sources. Performance measures indicate reasonable predictive capabilities (area under the curve [AUC] range: 0.58-0.98, accuracy range: 66.1-96.3%); however, most studies are at high risk of bias and 47 studies lack external validation. Currently, no highly valid prediction model is available for MCI to dementia conversion risk due to limited generalizability and high risk of bias in most studies. HIGHLIGHTS: Numerous models have been developed to predict the likelihood of conversion to dementia in individuals with MCI. Prediction models seem to have a reasonably good performance in predicting conversion to dementia, however, external validation and generalizability is often lacking. There is no prediction model available with a low risk for bias and that has been externally validated to accurately predict the risk of MCI to dementia conversion. For MCI to dementia conversion prediction models, more emphasis should be directed towards external validation, generalizability, and clinical applicability.

Indexed as

Cognitive DysfunctionDementiaBiasDisease ProgressionHumansMachine LearningMagnetic Resonance ImagingAlzheimer's diseasedementiamild cognitive impairmentprediction modelrisk predictionsystematic review

Identifiers

PMID40189799
PMCPMC11972987

What OpenQuestion holds

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Registered trials

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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.