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
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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

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Arlette Edjolo, Karine Pérès, Maëlenn Guerchet, Sophie Pilleron, Bébène Ndamba-Bandzouzi, et al.. Development of the Central Africa Daily Functioning Interference Scale for Dementia Diagnosis in Older Adults: The EPIDEMCA Study. Dementia and Geriatric Cognitive Disorders, Karger, 2019, 47 (1-2), pp.29-41. ⟨10.1159/000492782⟩. ⟨hal-01980277⟩

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