Table 5.

Report retrieval precision, classifying negation failures as false positives

Potentially Critical Finding	NCIT	RadLex	SNOMED-CT	ICD-9-CM
Ectopic Pregnancy	1	1	1	1
Pulmonary Embolism	0.93	0.93	0.87	0.88
Intracranial Hemorrhage	0.72	0.98	0.60	0.62