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The prevalence of dementia in a Portuguese community sample : a 10/66 Dementia Research Group study

2017Journal article Open access
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dc.contributor.authorPereira, Manuel Gonçalves
dc.contributor.authorCardoso, Ana
dc.contributor.authorVerdelho, Ana
dc.contributor.authorSilva, Joaquim Alves da
dc.contributor.authorAlmeida, Manuel Caldas de
dc.contributor.authorFernandes, Alexandra
dc.contributor.authorRaminhos, Cátia
dc.contributor.authorFerri, Cleusa P.
dc.contributor.authorPrina, A. Matthew
dc.contributor.authorPrince, Martin
dc.contributor.authorXavier, Miguel
dc.date.accessioned2017-11-21T16:18:00Z
dc.date.available2017-11-21T16:18:00Z
dc.date.issued2017
dc.description© The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.pt_PT
dc.description.abstractBackground: Dementia imposes a high burden of disease worldwide. Recent epidemiological studies in European community samples are scarce. In Portugal, community prevalence data is very limited. The 10/66 Dementia Research Group (DRG) population-based research programmes are focused in low and middle income countries, where the assessments proved to be culture and education fair. We applied the 10/66 DRG prevalence survey methodology in Portugal, where levels of illiteracy in older populations are still high. Methods: A cross-sectional comprehensive one-phase survey was conducted of all residents aged 65 and over of two geographically defined catchment areas in Southern Portugal (one urban and one rural site). Nursing home residents were not included in the present study. Standardized 10/66 DRG assessments include a cognitive module, an informant interview and the Geriatric Mental State-AGECAT, providing data on dementia diagnosis and subtypes, mental disorders including depression, physical health, anthropometry, demographics, disability/functioning, health service utilization, care arrangements and caregiver strain. Results: We interviewed 1405 old age participants (mean age 74.9, SD = 6.7 years; 55.5% women) after 313 (18.2%) refusals to participate. The prevalence rate for dementia in community-dwellers was 9.23% (95% CI 7.80–10.90) using the 10/66 DRG algorithm and 3.65% (95% CI 2.97–4.97) using DSM-IV criteria. Pure Alzheimer’s disease was the most prevalent dementia subtype (41.9%). The prevalence of dementia was strongly age-dependent for both criteria, but there was no association with sex. Conclusions: Dementia prevalence was higher than previously reported in Portugal. The discrepancy between prevalence according to the 10/66 DRG algorithm and the DSM-IV criteria is consistent with that observed in less developed countries; this suggests potential underestimation using the latter approach, although relative validity of these two approaches remains to be confirmed in the European context. We improved the evidence base to raise awareness and empower advocacy about dementia in Portugal, so that the complex needs of frail older people may be met in better ways.pt_PT
dc.description.sponsorshipThis study was supported by a research grant from FCT - Fundação para a Ciência e a Tecnologia, the Portuguese national funding agency for science, research and technology (Project reference PTDC/SAU-EPI/113652/2009: “Prevalence of old age neuropsychiatric disorders: contribution to mental health policy in Portugal”; PI: Miguel Xavier). A. Matthew Prina was supported by the MRC (MR/K021907/1). iNOVA4Health - UID/Multi/04462/2013, a program financially supported by Fundação para a Ciência e Tecnologia / Ministério da Educação e Ciência, through national funds and co-funded by FEDER under the PT2020 Partnership Agreement is acknowledged.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBMC Geriatrics (2017) 17:261pt_PT
dc.identifier.doi10.1186/s12877-017-0647-5pt_PT
dc.identifier.issn1471-2318
dc.identifier.urihttp://hdl.handle.net/10451/29828
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherBioMed Centralpt_PT
dc.relation.publisherversionhttps://bmcgeriatr.biomedcentral.com/pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDementiapt_PT
dc.subjectAlzheimer’s diseasept_PT
dc.subjectEpidemiologypt_PT
dc.subjectPrevalencept_PT
dc.subjectQuestionnairespt_PT
dc.subjectCross-cultural psychiatrypt_PT
dc.titleThe prevalence of dementia in a Portuguese community sample : a 10/66 Dementia Research Group studypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FSAU-EPI%2F113652%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04462%2F2013/PT
oaire.citation.issue1pt_PT
oaire.citation.startPage261pt_PT
oaire.citation.titleBMC Geriatricspt_PT
oaire.citation.volume17pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream5876
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication2e57888e-136b-49d8-89a0-c4f9ed040a17
relation.isProjectOfPublication6e056d12-1fcb-4433-a629-00897ee10965
relation.isProjectOfPublication.latestForDiscovery2e57888e-136b-49d8-89a0-c4f9ed040a17

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