Evidence map›Paper›PMID 22883691›Full record

Trial reportBMC neurology2012

Diagnostic and economic evaluation of new biomarkers for Alzheimer's disease: the research protocol of a prospective cohort study.

Ron L H Handels, Pauline Aalten, Claire A G Wolfs, Marcel OldeRikkert, Philip Scheltens, Pieter Jelle Visser, Manuela A Joore, Johan L Severens, Frans R J Verhey

Registry-linked trialAbstract readClinical TrialMulticenter Study
In one paragraph

Trial report in BMC neurology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01450891 (Novel Diagnostic Approaches for the Diagnosis of Alzheimer's Disease), which is not on this map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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.

NCT01450891 completednot on this map

Novel Diagnostic Approaches for the Diagnosis of Alzheimer's Disease: Technology Assessment and Clinical Effectiveness

TypeobservationalSponsorMaastricht University Medical CenterRan2009 to 2013Enrolled304ConditionsNeurodegenerative Diseases, Memory Disturbances
3 · Its place in the literature

Who cites it

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

  1. Pooled it
  2. Article
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  5. Article
  6. Review
  7. Article
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  10. 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

9 authors.

Ron L H HandelsAlzheimer Centre Limburg, School for Mental Health and Neuroscience (MHeNS), University Medical Centre, P.O. Box 5800, 6202, AZ Maastricht, The Netherlands.
Pauline Aalten
Claire A G Wolfs
Marcel OldeRikkert
Philip Scheltens
Pieter Jelle Visser
Manuela A Joore
Johan L Severens
Frans R J Verhey

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNew research criteria for the diagnosis of Alzheimer's disease (AD) have recently been developed to enable an early diagnosis of AD pathophysiology by relying on emerging biomarkers. To enable efficient allocation of health care resources, evidence is needed to support decision makers on the adoption of emerging biomarkers in clinical practice. The research goals are to 1) assess the diagnostic test accuracy of current clinical diagnostic work-up and emerging biomarkers in MRI, PET and CSF, 2) perform a cost-consequence analysis and 3) assess long-term cost-effectiveness by an economic model. METHODS/

designIn a cohort design 241 consecutive patients suspected of having a primary neurodegenerative disease are approached in four academic memory clinics and followed for two years. Clinical data and data on quality of life, costs and emerging biomarkers are gathered.Diagnostic test accuracy is determined by relating the clinical practice and new research criteria diagnoses to a reference diagnosis. The clinical practice diagnosis at baseline is reflected by a consensus procedure among experts using clinical information only (no biomarkers). The diagnosis based on the new research criteria is reflected by decision rules that combine clinical and biomarker information. The reference diagnosis is determined by a consensus procedure among experts based on clinical information on the course of symptoms over a two-year time period.A decision analytic model is built combining available evidence from different resources among which (accuracy) results from the study, literature and expert opinion to assess long-term cost-effectiveness of the emerging biomarkers. DISCUSSION: Several other multi-centre trials study the relative value of new biomarkers for early evaluation of AD and related disorders. The uniqueness of this study is the assessment of resource utilization and quality of life to enable an economic evaluation. The study results are generalizable to a population of patients who are referred to a memory clinic due to their memory problems.

trial registrationNCT01450891.

Indexed as

AgedAged, 80 and overAlgorithmsAlzheimer DiseaseBiomarkersFemaleHealth Care CostsHumansMaleMiddle AgedNetherlandsPrevalenceProspective StudiesResearch DesignBiomarkers

Identifiers

PMID22883691
PMCPMC3460756

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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.