Evidence map›Paper›PMID 25141298›Full record

ArticlePloS one2014

Predicting progression of Alzheimer's disease using ordinal regression.

Orla M Doyle, Eric Westman, Andre F Marquand, Patrizia Mecocci, Bruno Vellas, Magda Tsolaki, Iwona Kłoszewska, Hilkka Soininen, Simon Lovestone, Steve C R Williams and 1 more

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

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

  1. Pooled it
  2. Pooled it
  3. Incremental validity of the test of practical judgment (TOP-J) in the prediction of diagnosis in preclinical dementia.Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition · 2025
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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

11 authors.

Orla M DoyleDepartment of Neuroimaging, Institute of Psychiatry, King's College London, London, United Kingdom.
Eric WestmanDepartment of Neuroimaging, Institute of Psychiatry, King's College London, London, United Kingdom; Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
Andre F MarquandDepartment of Neuroimaging, Institute of Psychiatry, King's College London, London, United Kingdom.
Patrizia MecocciInstitute of Gerontology and Geriatrics, University of Perugia, Perugia, Italy.
Bruno VellasINSERM U 558, University of Toulouse, Toulouse, France.
Magda TsolakiAristotle University of Thessaloniki, Thessaloniki, Greece.
Iwona KłoszewskaMedical University of Lodz, Lodz, Poland.
Hilkka SoininenUniversity of Eastern Finland and University Hospital of Kuopio, Kuopio, Finland.
Simon LovestoneNIHR Biomedical Research Centre for Mental Health at South London, London, United Kingdom.
Steve C R WilliamsDepartment of Neuroimaging, Institute of Psychiatry, King's College London, London, United Kingdom; NIHR Biomedical Research Centre for Mental Health at South London, London, United Kingdom; Maudsley NHS Foundation Trust, London, United Kingdom; Institute of Psychiatry, King's College London, London, United Kingdom.
Andrew SimmonsDepartment of Neuroimaging, Institute of Psychiatry, King's College London, London, United Kingdom; NIHR Biomedical Research Centre for Mental Health at South London, London, United Kingdom; NIHR Biomedical Research Unit for Dementia at South London, London, United Kingdom; Maudsley NHS Foundation Trust, London, United Kingdom; Institute of Psychiatry, King's College London, London, United Kingdom.

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
UC Davis Alzheimer's Disease Core CenterP30AG010129 · NIA · UNIVERSITY OF CALIFORNIA DAVIS · PI DECARLI, CHARLES · 1991 to 2020
$28.3M
"MR Morphometrics and Cognitive Decline Rate in Large-Scale Aging Studies"K01AG030514 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CARMICHAEL, OWEN T. · 2008 to 2012
$495k
Arthritis Research UKMedical Research Council G0801464NIA NIH HHS K01 AG030514NIA NIH HHS P30 AG010129NIA NIH HHS U01 AG024904Wellcome TrustWellcome Trust WT088641/Z/09/Z
6 · The paper itself

Abstract

We propose a novel approach to predicting disease progression in Alzheimer's disease (AD)--multivariate ordinal regression--which inherently models the ordered nature of brain atrophy spanning normal aging (CTL) to mild cognitive impairment (MCI) to AD. Ordinal regression provides probabilistic class predictions as well as a continuous index of disease progression--the ORCHID (Ordinal Regression Characteristic Index of Dementia) score. We applied ordinal regression to 1023 baseline structural MRI scans from two studies: the US-based Alzheimer's Disease Neuroimaging Initiative (ADNI) and the European based AddNeuroMed program. Here, the acquired AddNeuroMed dataset was used as a completely independent test set for the ordinal regression model trained on the ADNI cohort providing an optimal assessment of model generalizability. Distinguishing CTL-like (CTL and stable MCI) from AD-like (MCI converters and AD) resulted in balanced accuracies of 82% (cross-validation) for ADNI and 79% (independent test set) for AddNeuroMed. For prediction of conversion from MCI to AD, balanced accuracies of 70% (AUC of 0.75) and 75% (AUC of 0.81) were achieved. The ORCHID score was computed for all subjects. We showed that this measure significantly correlated with MMSE at 12 months (ρ =  -0.64, ADNI and ρ =  -0.59, AddNeuroMed). Additionally, the ORCHID score can help fractionate subjects with unstable diagnoses (e.g. reverters and healthy controls who later progressed to MCI), moderately late converters (12-24 months) and late converters (24-36 months). A comparison with results in the literature and direct comparison with a binary classifier suggests that the performance of this framework is highly competitive.

Indexed as

Models, BiologicalAgedAged, 80 and overAlzheimer DiseaseCase-Control StudiesFemaleHumansMaleRegression AnalysisSeverity of Illness Index

Identifiers

PMID25141298
PMCPMC4139338

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.