TABLE 2

Resource Utilization for Patients in the ED Before and After Availability of Evidence-Based Guidelines

All YearsBefore GuidelinesAfter GuidelinesP Valuea
Corticosteroids
 Total sample20.4%21.9%17.8%.31
 Primary diagnosis only18.7%21.4%14.0%.11
Limited sampleb18.0%19.3%16.0%.42
Bronchodilators
 Total sample53.8%53.6%54.2%.91
 Primary diagnosis only57.0%55.7%59.3%.59
 Limited sampleb52.1%51.6%53.0%.80
Antibiotics
 Total sample33.2%33.6%29.7%.51
 Primary diagnosis only28.6%30.1%24.6%.35
 Limited samplec23.8%24.9%22.0%.63
Chest x-ray
 Total sample59.1%65.3%48.6%.01
 Primary diagnosis only59.9%66.3%48.4%.01
  • a χ2.

  • b Sample limited to those without asthma.

  • c Sample limited to those without a bacterial infection.