Prevalence and Risk Factors for Cognitive Impairment and Dementia in Indians: A Multiethnic Perspective from a Singaporean Study

Journal of Alzheimer's Disease : JAD
Mark Yu Zheng WongSaima Hilal

Abstract

Dementia is the leading cause of dependency and disability among older persons worldwide. There remains, however, limited studies on dementia rates within the Asia-Pacific region, with little data on differences across major Asian ethnic groups. To study the prevalence of cognitive impairment (CI) and dementia in community-dwelling Indians from Singapore and to examine interethnic differences among Chinese, Malays, and Indians. Participants (>60 years) drawn from the Indian component of the multiethnic Epidemiology of Dementia in Singapore (EDIS) study were screened using the locally validated Abbreviated Mental Test and Progressive Forgetfulness Questionnaire. Screen-positive participants underwent further detailed neuropsychological assessments. CI was classified into Cognitive impairment no dementia (CIND)-mild, CIND-moderate, and dementia. Of 961 Indian adults, 120 (12.5%) had CIND-mild, 101 (10.5%) CIND-moderate, and 12 (1.2%) dementia. The overall age-standardized prevalence of any CI was 24.6%. The prevalence of any CI increased with age (15.7% in ages 60-64 years to 30.1% in ages≥80 years), and was higher in women than men. Multivariate analysis showed that age, lower education, and hypertension were independently assoc...Continue Reading

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