American journal of respiratory and critical care medicine
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Am. J. Respir. Crit. Care Med. · Dec 2016
Observational StudyThe 6-minute Walk Test as a COPD Stratification Tool: Insights From the COPD Biomarker Qualification Consortium.
The 6-minute-walk distance (6MWD) test predicts mortality in chronic obstructive pulmonary disease (COPD). Whether variability in study type (observational vs. interventional) or region performed limits use of the test as a stratification tool or outcome measure for therapeutic trials is unclear. ⋯ The 6MWD test can be used to stratify patients with COPD for clinical trials and interventions aimed at modifying exacerbations, hospitalizations, or death.