Fig. 6
From: Appropriate use of a dry powder inhaler based on inhalation flow pattern
Number of subjects who fulfilled the criteria at each trial. a; subject number who achieved all three criteria. b; those who reached PIFR threshold. c; those who reached TPF threshold. d; those who reached VI threshold. In the 1st session, subjects started the inhalation trial with either Diskus or Turbuhaler. In the 2nd session they selected the other DPI