Severe exacerbations and BODE index: two independent risk factors for death in male COPD patients

Respiratory Medicine
J J Soler-CataluñaPilar Román Sánchez

Abstract

1) To determine whether severe exacerbation of COPD is a BODE index independent risk factor for death; 2) whether the combined application of exacerbations and BODE (e-BODE index), offers greater predictive capacity than BODE alone or can simplify the model, by replacing the exercise capacity (BODEx index). A prospective study was made of a cohort of COPD patients. In addition to calculation of the BODE index we register frequency of exacerbations. An analysis was made of all-cause mortality, evaluating the predictive capacity of the exacerbations after adjusting for the BODE. These variables were also used to construct two new indexes: e-BODE and BODEx. The study included 185 patients with a mean age of 71+/-9 years, and FEV(1)% 47+/-17%. Severe exacerbation appeared as an independent adverse prognostic variable of BODE index. For each new exacerbation the adjusted mortality risk increased 1.14-fold (95% CI: 1.04-1.25). However, the e-BODE index (C statistic: 0.77, 95% CI: 0.67-0.86) didn't improve prognostic capacity of BODE index (C statistic: 0.75, 95% CI: 0.66-0.84) (p=NS). An interesting finding was that BODEx index (C statistic: 0.74, 95% CI: 0.65-0.83) had similar prognostic capacity than BODE index. Severe exacerbation...Continue Reading

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