Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study

Arlette Edjolo; Karine Pérès; Maëlenn Guerchet; Sophie Pilleron; Bébène Ndamba-Bandzouzi; Pascal Mbelesso; Jean-Pierre Clément; Jean-François Dartigues; Pierre-Marie Preux

Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study

Arlette Edjolo ^{1, 2} Karine Pérès ³ Maëlenn Guerchet ^{2, 4} Sophie Pilleron ² Bébène Ndamba-Bandzouzi ² Pascal Mbelesso ² Jean-Pierre Clément ^{5, 2} Jean-François Dartigues ³ Pierre-Marie Preux ^{2, 6, 7}

1 Epidémiologie et Biostatistique [Bordeaux]

2 NET - Neuroépidémiologie Tropicale

3 ISPED - Institut de Santé Publique, d'Epidémiologie et de Développement

4 King‘s College London

5 Service de Psychiatrie [CHU Limoges]

6 SIME - Service de l'Information Médicale et de l'Évaluation [CHU Limoges]

7 Laboratoire de Biostatistique et d'Informatique Médicale

Abstract : Background: There are a few validated tools capable of assessing the dimensions essential for the diagnosis of dementia and cognitive disorders in sub-Saharan Africa. Objectives: Our aim was to develop an adapted tool, the Central African – Daily Functioning Interference (DFI) scale. Methods: An initial 16-item scale of activity limitations and participation restrictions was completed by 301 participants with low cognitive performances to assess their level of DFI. A psychometric evaluation was performed using Item Response Theory. Results: A unidimensional 10-item scale emerged with a reasonable coverage of DFI (thresholds range: –1.067 to 1.587) with good item discrimination properties (1.397–4.076) and a high reliability (Cronbach’s alpha = 0.92). The cutoff for detecting 96% of those with dementia was with a latent score ≥0.035 that corresponds to the LAUNDRY limitation. Conclusions: These results provide valuable support for the reliability and internal validity of an operational 10-item scale for DFI assessment used in Central Africa for the diagnosis of dementia in the elderly.

Keywords : Activity limitations Central Africa Daily functioning interference Dementia diagnosis Item response theory Participation restrictions Psychometric evaluation

Type de document :

Article dans une revue

Domaine :

Sciences du Vivant [q-bio] / Santé publique et épidémiologie

Liste complète des métadonnées

https://hal-unilim.archives-ouvertes.fr/hal-01980277
Contributeur : Elisabeth Grelier <>
Soumis le : lundi 14 janvier 2019 - 12:08:09
Dernière modification le : jeudi 7 février 2019 - 16:27:15

Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study

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Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study

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