QuickStats: Percentage* of All Emergency Department (ED) Visits† Made by Patients with Asthma,§ by Sex and Age Group — National Hospital Ambulatory Medical Care Survey, United States 2014–2015

During 2014-2015, patients who had asthma documented in the medical record accounted for 9.5% of all ED visits in the United States, with the highest percentage for children aged 5-17 years (13.6%), compared with 6.6% for children aged 0-4 years, 9.9% for adults aged 18-64 years, and 6.5% for those aged ≥65 years. Among those aged 0-4 years, boys were more likely than girls to have a visit with asthma recorded, but for the older age groups, 18-64 and ≥65, women with asthma documented were more likely than men to have an ED visit. The difference by sex for those aged 5-17 years was not statistically significant.