“… 3 , 4 The goals of asthma treatment are symptom control and future risk reduction. 5 , 6 However, improper use of an inhaler device can substantially reduce treatment effectiveness, thus resulting in uncontrolled disease, side effects, higher costs, 7 , 8 greater need for rescue medications, more emergency visits and hospitalizations, and low adherence to treatment. 9 , 10 Previous studies have shown an association between disease control and proper use of inhaler devices.…”