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- Essai clinique NCT04123171
Cerebrovascular Correlates of Dementia in Rural Communities - The Three Villages Study
Cerebrovascular Correlates of Dementia in Community-dwelling Older Adults Living in Remote Rural Communities - The Three Villages Study. Methodology and Operational Definitions.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
The Three Villages Study is a population-based prospective cohort study designed to reduce the increasing burden of cognitive decline and dementia in rural Ecuador. Before the study, our Executive Committee met with community leaders to explain the aims of the study and to learn about the culture and traditions of villagers. Field personnel were trained to assure uniformity in data collection. With the aid of satellite view (Google Earth, Google Inc., Mountain View, CA), updated sketches of the villages were performed to identify blocks and houses.
The study initially will follow a 3-Phase cross-sectional design. During Phase I, Atahualpa, El Tambo, and Prosperidad residents aged 60 years or more will be identified by means of a door-to-door survey and interviewed with validated questionnaires to identify those with relevant risk factors and suspected conditions of interest. In Phase II, certified neurologists will examine suspected cases as well as random samples of negative individuals, to assess reliability of field instruments and to determine prevalence of the investigated conditions. In Phase III, enrolled individuals will be invited to undergo complementary tests. Thereafter, incoming residents will be recruited and followed-up by means of yearly door-to-door surveys and other overlapping sources to estimate incidence of the disorders of interest.
Type d'étude
Inscription (Anticipé)
Contacts et emplacements
Lieux d'étude
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Guayas
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Samborondon, Guayas, Equateur, 092301
- Recrutement
- Universidad de Especialidades Espiritu Santo
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Contact:
- Oscar H Del Brutto, MD
- Numéro de téléphone: 593-997476984
- E-mail: odelbrutto@uees.edu.ec
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Contact:
- Bettsy Y Recalde, MD
- Numéro de téléphone: 59342907332
- E-mail: bettsyr@hotmail.es
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Santa Elena
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Atahualpa, Santa Elena, Equateur
- Recrutement
- Community center
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Contact:
- Bettsy Y Recalde, MD
- Numéro de téléphone: 59342907332
- E-mail: bettsyr@hotmail.com
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-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria: Individuals aged 60 years of more residing in Atahualpa, El Tambo, and Prosperidad, who signed a comprehensive informed consent form.
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Exclusion Criteria: Severely disabled individuals in whom interviews and procedures cannot be performed
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Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: Cohorte
- Perspectives temporelles: Éventuel
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
---|---|
The Three Villages Cohort
Individuals aged 60 years or more identified by means of door-to-door surveys, living in Atahualpa, El Tambo, and Prosperidad.
Individuals will be interviewed with validated field instruments, and there will be invited for the practice of complementary exams to recognize markers of aterosclerosis and cerebral small vessel disease.
|
Complementary exams are not invasive and will be performed in enrolled individuals who sign a comprehensive informed consent form
Autres noms:
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
To assess the prevalence and severity of dementia in the study population
Délai: One year
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The Clinical Dementia Rating Scale will be applied to all participants
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One year
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To assess cerebrovascular correlates of mild cognitive impairment and dementia in the study population
Délai: One year
|
Neuroimaging studies, ultrasound examination of extracranial carotid arteries, and ankle-brachial index determinations will be used to assess the presence of large vessel aterosclerosis and cerebral small vessel disease in the study population
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One year
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To assess cognitive decline in the follow-up
Délai: five years
|
Enrolled individuals will be prospectively followed every year for up to five years, and will be re-assessed to determine the progression of cognitive impairment and its relationship with markers of aterosclerosis and cerebral small vessel disease
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five years
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
To assess cutoffs of the Montreal Cognitive Assessment useful to differentiate normal cognitivion from mild cognitive impairment, and mild cognitive impairment to dementia in the study population
Délai: five years
|
The MoCA was mainly designed to separate normal individuals to those with MCI.
However, a major limitation of the MoCA is its lack of accuracy for identifying persons with dementia.
Therefore, the use of more complex field instruments (yet, feasible to apply in individuals living in rural settings) is needed to determine the burden of dementia and its cerebrovascular correlates in rural communities.
In this regard, the Clinical Dementia Rating Scale (CDRS) is a useful tool to assess people living in these settings for establishing the burden and severity of dementia as well as to further assess clinical and neuroimaging correlates of this condition.
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five years
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Collaborateurs et enquêteurs
Publications et liens utiles
Publications générales
- Del Brutto OH, Penaherrera E, Ochoa E, Santamaria M, Zambrano M, Del Brutto VJ; Atahualpa Project Investigators. Door-to-door survey of cardiovascular health, stroke, and ischemic heart disease in rural coastal Ecuador--the Atahualpa Project: methodology and operational definitions. Int J Stroke. 2014 Apr;9(3):367-71. doi: 10.1111/ijs.12030. Epub 2013 Mar 19.
- Del Brutto OH, Mera RM, Peralta LD, Hill JP, Generale LM, Torpey AP, Sedler MJ. Cardiovascular Health Status Among Community-Dwelling Ecuadorian Natives Living in Neighboring Rural Communities: The Three Villages Study. J Community Health. 2020 Feb;45(1):154-160. doi: 10.1007/s10900-019-00728-4.
- Del Brutto VJ, Ortiz JG, Del Brutto OH, Mera RM, Zambrano M, Biller J. Total cerebral small vessel disease score and cognitive performance in community-dwelling older adults. Results from the Atahualpa Project. Int J Geriatr Psychiatry. 2018 Feb;33(2):325-331. doi: 10.1002/gps.4747. Epub 2017 May 26.
- Del Brutto OH, Mera RM, Del Brutto VJ, Sedler MJ. The bicaudate index inversely associates with performance in the Montreal Cognitive Assessment (MoCA) in older adults living in rural Ecuador. The Atahualpa project. Int J Geriatr Psychiatry. 2016 Aug;31(8):944-50. doi: 10.1002/gps.4419. Epub 2016 Feb 2.
- Del Brutto OH, Mera RM, Castillo PR, Del Brutto VJ. Key findings from the Atahualpa Project: what should we learn? Expert Rev Neurother. 2018 Jan;18(1):5-8. doi: 10.1080/14737175.2018.1400382. Epub 2017 Nov 6. No abstract available.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Les troubles mentaux
- Maladies cardiovasculaires
- Maladies vasculaires
- Troubles cérébrovasculaires
- Maladies du cerveau
- Maladies du système nerveux central
- Maladies du système nerveux
- Artériosclérose
- Maladies artérielles occlusives
- Troubles neurocognitifs
- Troubles cognitifs
- Démence
- Dysfonctionnement cognitif
- Athérosclérose
- Maladies des petits vaisseaux cérébraux
Autres numéros d'identification d'étude
- 201901UEES
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
Délai de partage IPD
Critères d'accès au partage IPD
Type d'informations de prise en charge du partage d'IPD
- Protocole d'étude
- Plan d'analyse statistique (PAS)
- Formulaire de consentement éclairé (ICF)
- Rapport d'étude clinique (CSR)
Informations sur les médicaments et les dispositifs, documents d'étude
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