Evidence map›Paper›PMID 33681713›Full record

ArticleJournal of Alzheimer's disease reports2021

Diagnosis of Alzheimer's Disease in Developed and Developing Countries: Systematic Review and Meta-Analysis of Diagnostic Test Accuracy.

Miguel A Chávez-Fumagalli, Pallavi Shrivastava, Jorge A Aguilar-Pineda, Rita Nieto-Montesinos, Gonzalo Davila Del-Carpio, Antero Peralta-Mestas, Claudia Caracela-Zeballos, Guillermo Valdez-Lazo, Victor Fernandez-Macedo, Alejandro Pino-Figueroa and 2 more

Open access · diamondAbstract read
In one paragraph

Article in Journal of Alzheimer's disease reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.4field-weighted citation impact, top 10% 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.

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

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Benchmarking speech biomarkers of Alzheimer's against cognitive and neural measures.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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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

12 authors at 3 institutions in 2 countries.

Miguel A Chávez-FumagalliLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Pallavi ShrivastavaLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Jorge A Aguilar-PinedaLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Rita Nieto-MontesinosLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Gonzalo Davila Del-CarpioLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Antero Peralta-MestasDivision of Neurology, Psychiatry and Radiology of the National Hospital ESSALUD-HNCASE, Arequipa, Peru.
Claudia Caracela-ZeballosDivision of Neurology, Psychiatry and Radiology of the National Hospital ESSALUD-HNCASE, Arequipa, Peru.
Guillermo Valdez-LazoDivision of Neurology, Psychiatry and Radiology of the National Hospital ESSALUD-HNCASE, Arequipa, Peru.
Victor Fernandez-MacedoDivision of Neurology, Psychiatry and Radiology of the National Hospital ESSALUD-HNCASE, Arequipa, Peru.
Alejandro Pino-FigueroaDepartment of Pharmaceutical Sciences, Massachusetts College of Pharmacy and Health Sciences, Boston, MA, USA.
Karin J Vera-LopezLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Christian L Lino CardenasLaboratory of Genomics and Neurovascular Diseases, Vicerrectorado de investigación, Universidad Católica de Santa Maria, Arequipa, Peru.
Catholic University of Santa María · PEMassachusetts College of Pharmacy and Health Sciences · USMassachusetts General Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe present systematic review and meta-analysis of diagnostic test accuracy summarizes the last three decades in advances on diagnosis of Alzheimer's disease (AD) in developed and developing countries.

objectiveTo determine the accuracy of biomarkers in diagnostic tools in AD, for example, cerebrospinal fluid, positron emission tomography (PET), and magnetic resonance imaging (MRI), etc.

methodsThe authors searched PubMed for published studies from 1990 to April 2020 on AD diagnostic biomarkers. 84 published studies were pooled and analyzed in this meta-analysis and diagnostic accuracy was compared by summary receiver operating characteristic statistics.

resultsOverall, 84 studies met the criteria and were included in a meta-analysis. For EEG, the sensitivity ranged from 67 to 98%, with a median of 80%, 95% CI [75, 91], tau-PET diagnosis sensitivity ranged from 76 to 97%, with a median of 94%, 95% CI [76, 97]; and MRI sensitivity ranged from 41 to 99%, with a median of 84%, 95% CI [81, 87]. Our results showed that tau-PET diagnosis had higher performance as compared to other diagnostic methods in this meta-analysis.

conclusionOur findings showed an important discrepancy in diagnostic data for AD between developed and developing countries, which can impact global prevalence estimation and management of AD. Also, our analysis found a better performance for the tau-PET diagnostic over other methods to diagnose AD patients, but the expense of tau-PET scan seems to be the limiting factor in the diagnosis of AD in developing countries such as those found in Asia, Africa, and Latin America.

Indexed as

Alzheimer’s diseasediagnosismeta-analysissystematic review

Identifiers

PMID33681713
PMCPMC7902992
OpenAlexW3113804894

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.