The majority of people with asthma may be using their inhalers incorrectly.

That’s according to research by Propeller Health, in partnership with the University of Colorado School of Medicine and Children’s Hospital Colorado, that was published in The Journal of Allergy and Clinical Immunology, the company announced today.

According to a release, data collected by Propeller Health showed that 84 percent of patients took less than 30 sec. between the first and second puffs of their rescue or controller inhaler. The recommended use should take between 30 and 60 sec.

“Doctors have known for years that many patients do not follow the recommended inhaler instruction,” Propeller Health’s SVP of Medical and Clinical Affairs David Stempel said in a statement. “This is the first time we’ve had objective data from digital medicines to observe it outside of the clinic.”

The Propeller sensor also provides medication adherence reminders, air quality forecasts, symptom insights and tips to help patients self-manage their disease.