TABLE 3

Estimates of ED Visits According to Sample Characteristics and Data Source

ED Visits, No. per 100 Patient-YearsNo. of Studies
MinimumMedianMaximum
Asthma severity
    Mild0.03.658.321
    Moderate/severe0.03.766.712
    Severe2.25.080.04
    NHLBI criteria0.09.932.05
Race/ethnicity
    Large proportion of black patients0.14.558.316
    Large proportion of Hispanic patients0.03.680.05
    Predominately white patients0.00.523.49
Agea
    Nonadults (0–18 y)0.03.347.016
    Adults (≥18 y)0.15.380.012
    All ages0.02.561.614
Data source
    Commercial claims data0.15.366.716
    Medicaid claims data0.00.258.313
    Medical charts3.66.79.92
    Self-reported data0.66.480.07
    Self-reported/claims9.89.89.81
    Self-reported/medical charts23.442.561.62
All studies0.03.680.041
  • a No studies reported on children's ED visits.