Inhaler technique evaluation
At baseline (P1), the most challenging step on IT in children younger than 7 years old, was “waiting 30-60 seconds between inhalations” (41.7%). In children older than 7 years old, the most challenging step was performing a “deep exhalation” prior to pressing the inhaler canister (16.7%). Globally, scores obtained in the assessment of IT of space chamber with facemask were higher than those obtained with space chamber and (Table 4).