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Prevalence and incidence of cognitive impairment in an elder Portuguese population (65–85 years old)

2020-11-16Journal article Open access
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dc.contributor.authorPais, Ricardo
dc.contributor.authorRuano, Luís
dc.contributor.authorMoreira, Carla
dc.contributor.authorCarvalho, Ofélia P.
dc.contributor.authorBarros, Henrique
dc.date.accessioned2021-08-01T21:18:39Z
dc.date.available2021-08-01T21:18:39Z
dc.date.issued2020-11-16
dc.description.abstractBackground The increase in average life expectancy increases the risk of illness and frailty in the elderly, especially in the cognitive arena. This study has the objective to estimate the prevalence and incidence of cognitive impairment, in a representative sample of 65 to 85 years old followed for a mean period of 6-years. Methods Subjects aged 65–85 years (n = 586) were screened at baseline (1999–2004) to estimate the prevalence of cognitive impairment using the Mini-Mental State Examination. A total of 287 individuals with a normal MMSE at baseline were reassessed after 6.2 mean years (± 4.30 years) to evaluate the incidence of cognitive impairment, defined as scoring below the age and education-adjusted MMSE cut-off points adapted for the Portuguese population. We did not exclude Dementia. Results The baseline prevalence of cognitive impairment was 15.5% (95% CI: 12.7–18.7). Higher in women (18.9%; 95% CI: 14.9–23.3), that in men (10.4%; 95% CI: 6.7–15.1). Increased with age and was highest for participants without any schooling. The overall incidence rate was 26.97 per 1000 person-years; higher in women (33.8 per 1000 person-years) than in men (18.0 per 1000 person-years). Higher for the oldest participants and those with no schooling. Taking the standard European population, we estimated a prevalence of 16.5% and an incidence of 34.4 per 1000 person-years. Conclusion The prevalence of cognitive impairment in Portugal is within the estimated interval for the European population, and the incidence is lower than for the majority of the European countries. Women, senior and elders without education have a higher risk of cognitive impairment. In our sample, neither employment nor marital status has a significant effect on cognitive impairment.pt_PT
dc.description.sponsorshipPOCI-01-0145- FEDER-016867
dc.description.sponsorshipPOCI-01-0145- FEDER-006862
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPais R, Ruano L, Moreira C, Carvalho OP, Barros H. Prevalence and incidence of cognitive impairment in an elder Portuguese population (65-85 years old). BMC Geriatr. 2020;20(1):470. doi:10.1186/s12877-020-01863-7pt_PT
dc.identifier.doi10.1186/s12877-020-01863-7pt_PT
dc.identifier.issn1471-2318
dc.identifier.urihttp://hdl.handle.net/10400.26/37256
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Naturept_PT
dc.relationEpidemiology Research Unit - Institute of Public Health, University of Porto
dc.relation.publisherversionhttps://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-020-01863-7pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAgedpt_PT
dc.subjectAged, 80 and overpt_PT
dc.subjectEuropept_PT
dc.subjectFemalept_PT
dc.subjectHumanspt_PT
dc.subjectIncidencept_PT
dc.subjectMalept_PT
dc.subjectPortugalpt_PT
dc.subjectPrevalencept_PT
dc.subjectCognition Disorderspt_PT
dc.subjectCognitive Dysfunctionpt_PT
dc.titlePrevalence and incidence of cognitive impairment in an elder Portuguese population (65–85 years old)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleEpidemiology Research Unit - Institute of Public Health, University of Porto
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FDTP%2F04750%2F2013/PT
oaire.citation.issue1pt_PT
oaire.citation.startPage470pt_PT
oaire.citation.titleBMC Geriatricspt_PT
oaire.citation.volume20pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePais Antunes
person.givenNameRicardo
person.identifier.ciencia-id071C-BC4A-E18B
person.identifier.orcid0000-0002-1931-2659
person.identifier.scopus-author-id57205271398
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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