Evidence map›Paper›PMID 30365671›Full record

ArticleRevista brasileira de psiquiatria (Sao Paulo, Brazil : 1999)

The validity and reliability of the CAMDEX-DS for assessing dementia in adults with Down syndrome in Brazil.

Luciana M Fonseca, Glenda G Haddad, Guilherme P Mattar, Melaine C de Oliveira, Sharon S Simon, Laura M Guilhoto, Geraldo F Busatto, Shahid Zaman, Anthony J Holland, Marcelo Q Hoexter and 1 more

Open access · diamondAbstract readValidation Study
In one paragraph

Article in Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 25 citations in OpenAlex.

  1. Trial
  2. Observational
  3. Review
  4. Review
  5. Kynurenine pathway metabolite alterations in Down syndrome and Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Cognitive outcome measures for tracking Alzheimer's disease in Down syndrome.International review of research in developmental disabilities · 2022
    Article
  12. Article
  13. Article
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 at 5 institutions in 3 countries.

Luciana M FonsecaPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Glenda G HaddadPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Guilherme P MattarPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Melaine C de OliveiraDepartment of Statistics, Florida State University, Tallahassee, FL, USA.
Sharon S SimonPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Laura M GuilhotoAssociação de Pais e Amigos dos Excepcionais de São Paulo (APAESP), São Paulo, SP, Brazil.
Geraldo F BusattoPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Shahid ZamanCambridge Intellectual and Developmental Disabilities Research Group, Department of Psychiatry, University of Cambridge, Cambridge, UK.
Anthony J HollandCambridge Intellectual and Developmental Disabilities Research Group, Department of Psychiatry, University of Cambridge, Cambridge, UK.
Marcelo Q HoexterProjeto Transtornos do Espectro Obsessivo-Compulsivo (PROTOC), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, USP, São Paulo, SP, Brazil.
Cassio M BottinoPrograma Terceira Idade (PROTER), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), SP, Brazil.
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRHospital Universitário da Universidade de São Paulo · BRUniversity of Cambridge · GBAssociação de Pais e Amigos dos Excepcionais de São Paulo · BRFlorida State University · US

Funding

Medical Research Council G0900035Medical Research Council G1002252
6 · The paper itself

Abstract

objectiveAlzheimer's disease occurs at a higher prevalence and an earlier age in individuals with Down syndrome (DS) than typically developing individuals. However, diagnosing dementia in individuals with intellectual disability remains a challenge due to pre-existing cognitive deficits. The aim of this study was to investigate the validity and reliability of the Brazilian version of the Cambridge Examination for Mental Disorders of Older People with Down's syndrome and Others with Intellectual Disabilities (CAMDEX-DS) for individuals with DS.

methodsTwo psychiatrists, working independently, evaluated 92 adults with DS ≥ 30 years of age. The concurrent validity of the CAMDEX-DS was analyzed in relation to the gold standard of established international criteria. In a subgroup of 20 subjects, the concurrent validity of the CAMDEX-DS was analyzed in relation to an independent objective assessment of cognitive decline over three years. We analyzed the inter-rater reliability of cognitive assessment.

resultsThe diagnostic accuracy of the CAMDEX-DS compared to the gold standard was 96.7%. CAMDEX-DS-based diagnosis was considered consistent with cognitive decline. The probability of a participant with dementia having cognitive decline was 83%. Inter-rater reliability for the participant assessment was good, with a kappa of > 0.8 for 93% of the CAMDEX-DS items.

conclusionThe CAMDEX-DS can be considered the first valid and reliable instrument for evaluating dementia in adults with DS in Brazil. Its use in such individuals could improve clinical practice and research.

Indexed as

AdultBrazilCognitive DysfunctionDementiaDown SyndromeEpidemiologic MethodsHumansIntellectual DisabilityMiddle AgedNeuropsychological TestsTranslating

Identifiers

PMID30365671
PMCPMC6794138
OpenAlexW2896403628

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.