Limitations of free-form-text diagnostic requisitions as a tool for evaluating adherence to appropriate use criteria for transthoracic echocardiography

Table 5 Independent predictors of an inadequate echocardiography requisition

Variable	Adjusted odds ratio (95% CI)	P value
Inpatient	0.20 (0.12-0.32)	<0.001
No previous echocardiogram	0.39 (0.27-0.56)	<0.001
Referring physician specialty		<0.001
Indication for study*		<0.001
Age > 65	0.89 (0.64-1.23)	0.54
Female gender	1.01 (0.74-1.38)	0.98

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