1. Prestroke weight loss is associated with poststroke mortality among men in the Honolulu-Asia Aging Study.
- Author
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Bell CL, Rantanen T, Chen R, Davis J, Petrovitch H, Ross GW, and Masaki K
- Subjects
- Activities of Daily Living, Aged, Aged, 80 and over, Body Mass Index, Comorbidity, Hawaii epidemiology, Health Behavior, Health Status, Humans, Japan ethnology, Longitudinal Studies, Male, Overweight epidemiology, Risk Factors, Stroke epidemiology, Aging, Asian, Stroke mortality, Weight Loss
- Abstract
Objective: To examine baseline prestroke weight loss and poststroke mortality among men., Design: Longitudinal study of late-life prestroke body mass index (BMI), weight loss, and BMI change (midlife to late life) with up to 8-year incident stroke and mortality follow-up., Setting: Community-based aging study data., Participants: Japanese-American men (N=3581; age range, 71-93y) who were stroke free at baseline., Interventions: Not applicable., Main Outcome Measure: Poststroke mortality: 30 days poststroke, analyzed with stepwise multivariable logistic regression; and long-term poststroke (up to 8y), analyzed with stepwise multivariable Cox regression., Results: Weight loss (4.5kg decrements) was associated with increased 30-day poststroke mortality (adjusted odds ratio=1.48; 95% confidence interval [CI], 1.14-1.92), long-term mortality after incident stroke (all types, n=225; adjusted hazards ratio (aHR)=1.25; 95% CI, 1.09-1.44), and long-term mortality after incident thromboembolic stroke (n=153; aHR=1.19; 95% CI, 1.01 to 1.40). Men with overweight/obese late-life BMI (≥25kg/m(2), compared with healthy/underweight BMI) had increased long-term mortality after incident hemorrhagic stroke (n=54; aHR=2.27; 95% CI, 1.07-4.82). Neither desirable nor excessive BMI reductions (vs no change/increased BMI) were associated with poststroke mortality. In the overall sample (N=3581), nutrition factors associated with increased long-term mortality included the following: (1) weight loss (10lb decrements; aHR=1.15; 95% CI, 1.09-1.21), (2) underweight BMI (vs healthy BMI; aHR=1.76; 95% CI, 1.40-2.20), and (3) both desirable and excessive BMI reductions (vs no change or gain, separate model from weight loss and BMI; aHR range, 1.36-1.97; P<.001)., Conclusions: Although obesity is a risk factor for stroke incidence, prestroke weight loss was associated with increased poststroke (all types and thromboembolic) mortality. Overweight/obese late-life BMI was associated with increased posthemorrhagic stroke mortality. Desirable and excessive BMI reductions were not associated with poststroke mortality. Weight loss, underweight late-life BMI, and any BMI reduction were all associated with increased long-term mortality in the overall sample., (Copyright © 2014 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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