Journal of insurance medicine (New York, N.Y.)
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Multicenter Study Comparative Study
Mortality in a recent study of 625 patients with chronic obstructive pulmonary disease compared with results of 3 older studies.
To assess comparative mortality in COPD patients by severity in a recent study with results in 3 older studies. ⋯ Incorporation of additional severity factors such as dyspnea and exercise capacity improves the prediction of mortality by severity of the COPD, as compared with the use of FEV1 staging alone. Mortality remains at a very high level in all cases, except for those with the mildest form of COPD.