The Prevalence of Dementia Subtypes in Rural Tanzania  

Oleh:

Paddick, Stella-Maria ; Longdon, Anna ; Kisoli, Aloyce ; Gray, William K. ; Dotchin, Catherine L.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Geriatric Psychiatry (keterangan: ada di ClinicalKey) vol. 22 no. 12 (Dec. 2014), page 1613-1622.
Topik: Dementia; Alzheimer disease; vascular dementia; prevalence; Tanzania; Africa

Ketersediaan

Perpustakaan FK Nomor Panggil: A35.K Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Objectives The prevalence of dementia is predicted to increase rapidly in developing countries. Vascular risk factors may contribute to this rise. Our aim was to estimate the proportions of Alzheimer's disease (ADD) and vascular dementia (VAD) in a prevalent cohort of dementia cases in rural Tanzania. Design A two-stage door-to-door dementia prevalence study. Setting Hai district, Tanzania Participants In Phase I, the Community Screening Instrument for Dementia (CSI-D) was used to screen 1198 community-dwelling people for dementia. In Phase II, 168/184 (91.3%) of those with poor performance, 56/104 (53.8%) of those with intermediate performance and 72/910 (7.9%) of those with good performance on CSI-D were interviewed and diagnoses were made using the DSM-IV criteria. Measurements For subtype diagnosis, DSM-IV dementia criteria plus NINCDS-ADRDA criteria were used for ADD and NINDS-AIREN criteria for VAD. Other dementias were diagnosed by international consensus criteria. Diagnoses were confirmed or excluded by computerised tomography where clinically appropriate. Results Of 78 dementia cases, 38 (48.7%) were ADD and 32 (41.0%) were VAD. The crude prevalence of ADD was 3.7% (95% CI 2.5 to 4.9) and of VAD was 2.9% (95% CI 1.9 to 3.9). The age-adjusted prevalence was 3.0% (95% CI 1.8 to 4.2) for ADD and 2.6% (95% CI 1.6 to 3.6) for VAD. A previous diagnosis of diabetes mellitus was independently associated with greater odds of having VAD than ADD. Conclusions VAD accounted for a greater proportion of dementia cases than expected. Further investigation and treatment of risk factors is required in this setting.

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