Browsing by Author "Yu, Doris S F"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Accuracy of the montreal cognitive assessment in detecting mild cognitive impairment and dementia in the rural African population
    (Oxford University Press, 2020) Masika, Golden M; Yu, Doris S F; Li, Polly W C
    Objective The incidence of dementia in the sub-Saharan Africa is rising. However, screening tools for cognitive decline that fits their linguistic and cultural context are lacking. The aim of this study was to determine the accuracy of the Kiswahili version of Montreal Cognitive Assessment (K-MoCA) to detect mild cognitive impairment or dementia among older adults in the rural Tanzania. Methods We recruited 259 community-dwelling older adults in Chamwino district, Tanzania. The concurrent validity and discriminatory power of K-MoCA were examined by comparing its score with IDEA cognitive screening and psychiatrist’s diagnosis using DSM-V, respectively. All the questionnaires were administered in face-to-face interview. Results K-MoCA demonstrated acceptable reliability (Cronbach’s alpha = 0.780). Concurrent validity was evident by its significant correlation with the IDEA screening test (Pearson’s r = 0.651, p < 0.001). Using the psychiatrist’s rating as the reference, the optimal cut-off score for MCI and dementia was 19 and 15, respectively, which yielded the sensitivity of 70% and specificity of 60% for MCI, and sensitivity of 72% and specificity of 60% for dementia. Further analysis indicated that education and age influence performance on K-MoCA. Conclusion Overall, the K-MoCA is a reliable and valid tool for measuring cognitive decline. However, its limited discriminatory power for MCI and dementia may be compromised by the cultural irrelevance of some items.
  • Thumbnail Image
    Item
    Visual art therapy and cognition: effects on people with mild cognitive impairment and low education level
    (Oxford University Press, 2021) Masika, Golden M; Yu, Doris S F; Li, Polly W C; Lee, Diana T F; Nyundo, Azan
    Objectives The aim of this study was to examine the effects of visual art therapy (VAT) on cognition, psychological and functional ability of people with mild cognitive impairment (MCI), and low education. Methods A single-blinded randomized controlled trial was conducted among 127 older adults with MCI, mean age 73.6 years, and level of education in years, median (range) = 0 (0–9). The intervention group received 12 VAT sessions over 6 weeks. The control group received 6 health education sessions. The outcomes measures at baseline, immediately postintervention, at 3-month, and 6-month follow-up included global cognitive functions, depression, mental well-being, and instrumental activities of daily living functions. Results The intervention group demonstrated greater improvement than the control group in global cognition (β = 2.56, 95% confidence interval [CI] = 1.16, 3.97, p < .001, standardized mean difference [SMD] = 0.75) and depression (β = −2.01, 95% CI = −3.09, −0.93, p < .001, SMD = −0.93) immediately postintervention. The effects on cognitive functions were sustained at 3 and 6 months follow-up. The differential effect of VAT on mental well-being and functional ability compared to health education were undetectable. Discussion VAT can improve cognitive functions and mood status of older adults with MCI who have no or low education.