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Asthma

Data are for the U.S.

Morbidity: Adults

  • Number of noninstitutionalized adults who currently have asthma: 18.7 million
  • Percent of noninstitutionalized adults who currently have asthma: 8.0%

Source: Summary Health Statistics for U.S. Adults: National Health Interview Survey, 2012, table 3, 4 [PDF - 1.3 MB]

Morbidity: Children

  • Number of children who currently have asthma: 6.8 million
  • Percent of children who currently have asthma: 9.3%

Source: Summary Health Statistics for U.S. Children: National Health Interview Survey, 2012, table 1 [PDF - 697 KB]

Health care use: Ambulatory care

  • Number of visits to physician offices with asthma as primary diagnosis: 14.2 million

Source: National Ambulatory Medical Care Survey: 2010 Summary Tables, table 13 [PDF - 403 KB]

Health care use: Hospital outpatient departments

  • Number of visits to hospital outpatient departments with asthma as primary diagnosis: 1.3 million

Source: National Hospital Ambulatory Medical Care Survey: 2010 Outpatient Department Summary Tables, table 11 [PDF - 330 KB]

Health care use: Emergency departments

  • Number of visits to emergency departments with asthma as primary diagnosis: 1.8 million

Source: National Hospital Ambulatory Medical Care Survey: 2010 Emergency Department Summary Tables, table 12 [PDF - 481 KB]

Health care use: Hospital inpatient care

  • Number of discharges with asthma as first-listed diagnosis: 439,000
  • Average length of stay: 3.6 days

Source: National Hospital Discharge Survey: 2010 table, Average length of stay and days of care – Number and rate of discharges by first-listed diagnostic categories [PDF - 58 KB]

Mortality

  • Number of deaths: 3,345
  • Deaths per 100,000 population: 1.1

Source: Deaths: Final Data for 2011, tables 10, 11 [PDF - 1.5 MB]

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