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Am J Epidemiol. 2013 Oct 1;178(7):1150-60. doi: 10.1093/aje/kwt087. Epub 2013 Aug 8.

Development of a modified BODE index as a mortality risk measure among older adults with and without chronic obstructive pulmonary disease.

Abstract

The BODE index was developed as a prognostic mortality risk tool for persons with chronic obstructive pulmonary disease (COPD). It incorporates 4 measures: body mass index, lung obstruction, dyspnea, and exercise capacity. The intent of this study was to examine how well a BODE-like index constructed using a simpler lung function measure, peak expiratory flow, in combination with physical functioning and symptom information more readily found in survey data (a quasi-BODE index), performs in identifying persons at higher risk of mortality and whether it may be extended as an assessment of mortality risk to persons without diagnosed COPD. Using US national survey data from the Health Retirement Study for 2006-2010, each unit increase in the quasi-BODE index score was associated with a multiplicative 50% increase in mortality risk (odds ratio = 1.50, 95% confidence interval: 1.41, 1.59). The quasi-BODE index is a multidimensional health status instrument based on the BODE index, which is a good predictor of mortality. The quasi-BODE index was compiled using simple measures of physical and respiratory function. It is a potentially useful prognostic instrument for older adult populations with or without COPD, including those with severe physical limitations, particularly when combined with demographic factors and comorbid conditions.

KEYWORDS:

chronic disease; dyspnea; frail elderly; health status indicators; lung diseases, obstructive; mortality; respiratory function tests; survival

PMID:
23928262
[PubMed - indexed for MEDLINE]
PMCID:
PMC3857925
Free PMC Article
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