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The 2011 combined Global Initiative for Chronic Obstructive Lung Disease (GOLD) assessment incorporates symptoms, exacerbation history, and spirometry in discriminating risk of exacerbations in patients with chronic obstructive pulmonary disease (COPD). Six-minute-walk distance (6MWD) and accelerometry also have been used to assess disease severity in COPD. The association between these measures and the risks of hospitalization and mortality in the context of GOLD 2011 is unknown.

annals of the american thoracic society

Six-Minute-Walk Distance and Accelerometry Predict Outcomes in Chronic Obstructive Pulmonary Disease Independent of Global Initiative for Chronic Obstructive Lung Disease 2011 Group