6 , 14 This difference was statistically significant for all but one of the single-DPI comparisons at V1; only the comparison between ELLIPTA FF/VI and DISKUS FP/SAL did not reach statistical significance ( P =0.114).
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Critical Error Frequency and the Impact of Training with Inhalers Commonly used for Maintenance Treatment in Chronic Obstructive Pulmonary Disease.
1
0.1140
0.1140