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Change in FEV1 percent predicted (mean, SD) in subjects treated for active nontuberculous mycobacteria (NTM) disease from the year before the date of the first positive culture, time of first NTM culture, time of treatment initiation, and 1 year after treatment initiation. The mean FEV1 at the time of treatment initiation was significantly lower than the mean FEV1 1 year before the first positive NTM culture.
