Fig. 1From: Identifying critical inhalation technique errors in Dry Powder Inhaler use in patients with COPD based on the association with health status and exacerbations: findings from the multi-country cross-sectional observational PIFotal studyError frequencies observed in the PIFotal study[8], grouped for all DPIs. Note: ‘Empty mouth before inhalation’ & ‘Rinse mouth’ were not reported so were excluded in the modelsBack to article page