Fig. 4
From: Dry-powder inhalers in patients with persistent airflow limitation: usability and preference
Pairwise comparison between the three devices investigated: arrows’ direction represents which device is superior (with statistical significance according to p); e.g. the black arrow joining Genuair and Breezhaler means that Genuair results statistically superior (p < 0.05) to Breezhaler according to the number of attempts before achieving the first proper inhalation (such as, Genuair needs less attempts)