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Title
The 6 minute walk in idiopathic pulmonary fibrosis: longitudinal changes and minimum important difference.
Authors
Swigris, Jeffrey J; Wamboldt, Frederick S; Behr, Juergen; du Bois, Roland M; King, Talmadge E; Raghu, Ganesh; Brown, Kevin K
Abstract
The response characteristics of the 6 minute walk test (6MWT) in studies of idiopathic pulmonary fibrosis (IPF) are only poorly understood, and the change in walk distance that constitutes the minimum important difference (MID) over time is unknown.