- Prevalence Rate of Cognitive Impairment and Dementia Among the Elderly in Busan.
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Jung Soon Kim, Su Ill Lee, Ihn Sook Jeong, Young In Chung, In Kyung Hwang, Bong Sook Yih, Min Jeong Kim, Eu Soo Cho, Jin Ho Chun
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Korean J Prev Med. 2003;36(1):63-70.
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 Abstract
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- OBJECTIVES
To investigate the prevalence of cognitive impairment and dementia in elderly people, aged 65 or above, residing in Busan Metropolitan City. METHODS: Total of 1, 101 old people, aged 65 or above, living in Busan as of December 31, 2001 were selected using stratified three-stage cluster sampling. Cognitive impairment was determined from the MMSE-K score, and dementia confirmed from five psychometric measures and the Barthel index. The crude prevalence, sex-age adjusted for the Korean population, were obtained. RESULTS: With the cut-off point for cognitive impairment was set at 24 points, or below, on the MMSE-K scale, the crude rate of cognitive impairment was 29.3% (15.7% for men and 37.5% for women), and the sex-age adjusted prevalence was 30.5% (17.5% for men and 37.0% for women). When the cut-off point for cognitive impairment was set at 20 points, or below, on the MMSE-K scale, the crude rate of cognitive impairments were 10.0% (4.1% for men and 13.5% for women), and 10.6% (4.7% for men and 13.1% for women), respectively. The crude dementia, and the sex-age adjusted rates were 7.4% (2.4% for men and 10.5% for women), and 8.0% (2.7% for men and 10.0% for women), respectively. CONCLUSIONS: The prevalence of dementia in this study was somewhat lower than that reported by other domestic and foreign studies. Our results related to the difference in time and space, diagnostic tools, response rates, and distribution of male and female subjects, etc.
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Summary
- Community Based Cross-sectional Study on the Risk Factors of Dementia among the Elderly in a City.
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Ihn Sook Jeong, Jung Soon Kim, Byung Chul Chun, Eu Soo Cho
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Korean J Prev Med. 2002;35(4):313-321.
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Abstract
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To identify the risk factors of dementia among the elderly in a large city. METHODS: A cross-sectional study was conducted in July 2001, with potential participants selected by stratified two stage cluster sampling of the elderly population of Keumgog dong, Busan. A total of 452 elderly people aged 65 years and over, underwent a two phase diagnostic procedure. Mini-mental State Examination-Korean (MMSE-K) and Samsung Dementia Questionnaire were used for the 1st stage, and the Clinical Dementia Rating Scale (CDR), the Bartel ADL, and IADL Index, the Korean Geriatric Depression Scale (KGDS), the Modified Hatchinski Ischemic Scale (MHIS), and other laboratory tests were used for the 2nd stage. RESUJLTS: Of the 446 participants finally chosen, 45 were confirmed with dementia, and 363 as normal, with the rests not confirmed with dementia or as normal, were excluded from the analysis. According to the logistic regression analysis, the risk of dementia was significantly higher in; people aged 80 and above (OR=4.36, 95% CI=1.97-9.62), illiterate (OR=3.58, 95% CI=1.71-7.46), who had a history of strokes (OR=6.35, 95% CI=2.71-14.87), or who had a history of hyperlipidemia (OR=4.74, 95% CI=1.65-13.61), compared to their counterparts. CONCLUSIONS: These results suggest that efforts to prevent strokes and hyperlipidemia can significantly decrease the risk of dementia.
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