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ICD Code: 493. Asthma



ICD Code: 493. Article Review
Title: Centers for Disease Control and Prevention; "Vital Signs: Asthma Prevalence, Disease Characteristics, and Self-Management Education --- United States, 2001-2009." Morbidity and Mortality Weekly Report; V.60; 5/11; p547
      STUDY DESIGN: This report updates U.S. asthma prevalence estimates and describes trends, disease characteristics, and self-management education status among persons who have asthma. Data from the 2009 National Health Interview Survey (NHIS) were used to estimate asthma prevalence by age, sex, race/ethnicity, income status, and U.S. Bureau of the Census geographic region. Data from the NHIS 2008 core survey were used to estimate asthma attack prevalence (the percentage of persons with at least one asthma attack in the preceding 12 months). Data from the 2001, 2005, and 2009 Behavioral Risk Factor Surveillance System (BRFSS) surveys were used to estimate the state-specific asthma prevalence for adults.
      PREVALENCE TRENDS: During 2001-2009, the proportion of persons of all ages with asthma in the United States increased significantly (12.3%), from 7.3% (20.3 million persons) to 8.2% (24.6 million persons). A rising trend in asthma prevalence was observed across all demographic groups studied. Prevalence increased significantly during 2001-2009 for children (8.7% to 9.6%), adults (6.9% to 7.7%), males (6.3% to 7.1%), females (8.3% to 9.2%), whites (7.2% to 7.8%), blacks (8.4% to 10.8%), and Hispanics (5.8% to 6.4%). Significant differences in prevalence by age, sex, and race/ethnicity persisted over the observed period. In examining subgroups, a rising trend in asthma prevalence was observed for non-Hispanic black children (11.4% to 17.0%), non-Hispanic white women (8.9% to 10.1%), and non-Hispanic black men (4.7% to 6.4%). In 2009, asthma prevalence was greater among children than adults (9.6% versus 7.7%), and was especially high among boys (11.3%) and non-Hispanic black children (17.0%). Prevalence among adults was greatest for women (9.7%) and adults who were poor (10.6%).
      In 2008, at least one-half (52.6%) of persons who had asthma reported having had an asthma attack in the preceding 12 months. A greater proportion of children were reported to have had an asthma attack than adults (57.2% versus 50.7%) in the preceding 12 months. A greater proportion of persons who had asthma reported being in fair or poor health (21.8%) than those who did not have asthma (9.3%). A greater proportion of persons who had an asthma attack reported being in fair or poor health (24.8%) than those who did not have an attack (17.9%).
      IMPACT AND HEALTHCARE UTILIZATION: In 2008, 41.8% (4.6 million) of persons who reported having an asthma attack missed at least 1 day of school or work because of asthma in the preceding 12 months. Persons with an asthma attack missed an average of 4.5 days of school or work per year, with 26.0% (3.2 million persons) reporting emergency department or urgent care center visits and 7.0% (850,183 persons) reporting having been admitted to a hospital. Thus, 13.6% (or nearly one in seven) of persons with asthma had an asthma attack that required urgent outpatient care.
      INSURANCE AND TREATMENT: Most persons with asthma had health insurance (89.0%) and had taken quick-relief inhaler prescription medicine (64.4%; 15 million persons) during the past 3 months. Long-term control (oral or inhaler) prescription medicine use, including use of corticosteroids at the time of the survey, was 33.5% (7.8 million persons). However, compared with those who had health insurance in the preceding 12 months, nearly four times the number of the uninsured persons with asthma were unable to buy prescription medication (40.3% versus 11.5%) and fewer reported seeing or talking with a primary care physician (58.8% versus 85.6%) or specialist (19.5% versus 36.9%) in the preceding 12 months.
      PATIENT EDUCATION: Nearly 60% of persons who had asthma had been taught to recognize early signs and symptoms of an asthma attack, and 68.1% had been taught the appropriate response to it.

Search Criteria: Text - Morbidity and Mortality Weekly Report; V.60; 5/11; p547