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. 2022 Mar 15;17:559–568. doi: 10.2147/COPD.S353441

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© 2022 Mahler et al.

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Patient characteristics at baseline by PIF status.

Notes: PIF is against medium low resistance. Three patients did not complete the CAT symptoms assessment including 1 from the suboptimal PIF cohort and 2 from the optimal PIF cohort.

Abbreviations: COPD, chronic obstructive pulmonary disease; CAT, COPD Assessment Test; mMRC, modified Medical Research Council; N, sample size; PIF, peak inspiratory flow.