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

Table 3

SPECT appropriateness by admission status, gender and known CAD.

Patient Variables	Appropriate	Uncertain	Inappropriate	P Value
	N, %	N, %	N, %
Admission
Inpatient (𝑛=256)	184; 72%	33; 13%	39; 15%	.0004
Outpatient (𝑛=305)	179; 59%	83; 27%	43; 14%
Gender
Men (𝑛=307)	214; 70%	66; 21%	27; 9%	<.0001
Women (𝑛=263)	156; 59%	50; 19%	57; 22%
Known CAD
Yes (𝑛=158)	117; 74%	34; 22%	7; 4%	<.0001
No (𝑛=412)	253; 61%	82; 20%	77; 19%