Clinical Evaluation of the Appropriateness Use Criteria for Single-Photon Emission-Computed Tomography: Differences by Patient Population, Physician Specialty, and Patient Outcomes

Table 1

Patient population.

Patient characteristics	N; %
Age (mean ± SD)	63.5±13.1 yrs
Admission status
Inpatient	268; 48%
Outpatient	317; 54%
Gender
Men	307; 55%
Women	266; 45%
Known CAD
Yes	166; 28%
No	419; 72%
Symptoms
Yes	307; 53%
No	278; 47%
Pretest likelihood
Low	299; 51%
Intermediate	253; 43%
High	33; 6%
Framingham risk
Low	58; 33%
Intermediate	101; 58%
High	16; 9%
Test type
Exercise	335; 57%
Pharmacologic	249; 43%