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Body Mass Index and Mortality Rate in Korean Patients with Alzheimer's Disease

Title
Body Mass Index and Mortality Rate in Korean Patients with Alzheimer's Disease
Authors
Jang, HyeminKim, Jong HunChoi, Seong HyeLee, YunhwanHong, Chang HyungJeong, Jee HyangHan, Hyun JeongMoon, So YoungPark, Kyung WonHan, Seol-HeePark, Kee HyungKim, Hee JinNa, Duk L.Seo, Sang Won
Ewha Authors
정지향
SCOPUS Author ID
정지향scopus
Issue Date
2015
Journal Title
JOURNAL OF ALZHEIMERS DISEASE
ISSN
1387-2877JCR Link1875-8908JCR Link
Citation
vol. 46, no. 2, pp. 399 - 406
Keywords
Alzheimer's diseasebody mass indexmortalityobesitysurvival analysis
Publisher
IOS PRESS
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Background: A relationship between body weight, cognitive impairment, and the onset of Alzheimer's disease (AD) was recently reported. However, to our knowledge, no studies have investigated the relationship between body weight and mortality in Asian AD patients. Objective: We evaluated the relationship between body mass index (BMI) and mortality rate in Korean AD cohorts. Methods: Participants were consecutively included from two Korean representative registries: 579 AD patients from Samsung Medical Center and 1911 AD patients from the Clinical Research Center for Dementia of South Korea study. We combined these two AD cohorts to evaluate the association between BMI and mortality. BMI was used to categorize the participants into underweight, normal-weight, overweight, and obesity subgroups. All deaths were confirmed through the nationwide mortality database of Statistics Korea. Results: 53 of 181 (29.3%), 208 of 1,127 (18.5%), 88 of 626 (14.1%), and 115 of 556 (20.7%) patients died in the underweight, normal-weight, overweight, and obese subgroups during 43.7 months of follow-up. The time-dependent cox proportional hazards model showed that, relative to the normal-weight subgroup, the underweight group had higher mortality (HR 1.82 (95% CI, 1.07-3.09)) while overweight group had lower mortality rate (HR 0.60 (95% CI, 0.38-0.95)) The effects of underweight and overweight were prominent in younger and older elderly group, respectively. However, there were no interactive effects of dementia severity or gender and BMI on survival rate. Conclusion: Relative to AD patients of normal weight, those who were underweight had an increased mortality rate, and overweight predicted decreased mortality in AD patients. Furthermore, our findings may help facilitate mortality stratification in AD patients by using baseline BMI.
DOI
10.3233/JAD-142790
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의학전문대학원 > 의학과 > Journal papers
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