Fig. 1. Yearly average ED visits for AE per 1,000 people in different ages during the 5-year study period (January 1, 2008 to December 31, 2012). ED, emergency department; AE, asthma exacerbation.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.