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Treated Prevalence and Incidence of Dementia Among National Health Insurance Enrollees in Taiwan, 1996-2003

Jianan Mental Hospital, Department of Health, Tainan, Chia Nan University of Pharmacy & 8cience, Tainan, icchien{at}mail.cnpc.gov.tw

Yu-Chung Lin, MD

Jianan Mental Hospital, Department of Health, Tainan

Yiing-Jenq Chou, MD, PhD

Department of Social Medicine, National Yang-Ming University, Taipei

Ching-Heng Lin, MS

Community Medicine Research Center and Institute of Public Health, National Yang-Ming University, Taipei

Shin-Huey Bih, MD, MS

Department of Child and Adolescent Psychiatry, Bali Mental Hospital, Taipei

Cheng-Hua Lee, MD, PhD

Institute of Hospital and Health Care Administration, National Yang-Ming University, Taipei, Bureau of National Health Insurance, Department of Health, Taipei, Taiwan

Pesus Chou, DrPH

Community Medicine Research Center and Institute of Public Health, National Yang-Ming University, Taipei

The National Health Insurance database to determine the treated prevalence and incidence of dementia in Taiwan was used in this study. A population-based random sample of 22 118 subjects aged 65 or older was obtained as a dynamic cohort. Those study subjects who had filed at least one service claim from 1996 to 2003 for either outpatient care or inpatient care with a principal diagnosis of dementia were identified. The annual treated prevalence increased from 0.71% to 1.92% from 1996 to 2003. The annual treated incidence rates were around 0.76% to 1.04% per year from 1997 to 2003. The annual treated incidence rates for the 5-year age groups, from 65 to 90 years and older, were 0.44%, 0.65%, 0.98%, 1.46%, 1.81%, and 1.80%, respectively. Both the treated prevalence and incidence rates of dementia in National Health Insurance were lower than those of community studies.

Key Words: prevalence • incidence • dementia • National Health Insurance • Taiwan

Journal of Geriatric Psychiatry and Neurology, Vol. 21, No. 2, 142-148 (2008)
DOI: 10.1177/0891988708316859


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