Skip Navigation LinksSkip Navigation Links
Centers for Disease Control and Prevention
Safer Healthier People
Blue White
Blue White
bottom curve
CDC Home Search Health Topics A-Z spacer spacer
Blue curve MMWR spacer

Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: Type 508 Accommodation and the title of the report in the subject line of e-mail.

QuickStats: Percentage of Persons With Current Asthma* Who Used Inhaled Medication During the Preceding 3 Months, by Medication Type and Symptom Severity Level --- United States, 2003

* Persons with current asthma were respondents who reported ever being told by a medical professional that they had asthma and who still had asthma.

The frequency of symptoms and degree of activity limitation were used to classify those with current asthma into four symptom severity groups. Levels are defined by the National Asthma Education and Prevention Program in Guidelines for the Diagnosis and Management of Asthma (available at

In 2003, approximately two thirds of persons with current asthma used one or more inhaled medications during the preceding 3 months, and the proportion using inhaled medications increased with levels of symptom severity. Approximately half of all respondents with asthma used a B2A-S rescue inhaler, one third used an inhaled corticosteroid, and one fifth used a B2A-L inhaler. Each symptom severity level had a similar pattern of inhaled medication use.

SOURCE: 2003 National Asthma Survey. Available at

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

Disclaimer   All MMWR HTML versions of articles are electronic conversions from ASCII text into HTML. This conversion may have resulted in character translation or format errors in the HTML version. Users should not rely on this HTML document, but are referred to the electronic PDF version and/or the original MMWR paper copy for the official text, figures, and tables. An original paper copy of this issue can be obtained from the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, DC 20402-9371; telephone: (202) 512-1800. Contact GPO for current prices.

**Questions or messages regarding errors in formatting should be addressed to

Date last reviewed: 8/24/2006


Safer, Healthier People

Morbidity and Mortality Weekly Report
Centers for Disease Control and Prevention
1600 Clifton Rd, MailStop E-90, Atlanta, GA 30333, U.S.A


Department of Health
and Human Services