Table 4.

Percentage of patients with all significant intrathoracic injuries, classified as major or minor, and the percentage who had major (surgery, chest tube, or mechanical ventilation) or minor (inpatient pain control or observation >24 hours) interventions.^*

		Imaging That Identified Injury			ORs (95% CI) of Intervention for Injury on CCT Only vs CXR and CCT
Injury Classification	Total Injured	CXR and CCT	CCT Only	OI, %
Patients with any injury	2,048†	594	1,454	71.0	N/A
Any major SITI	305	103	202	66.2	0.23 (0.17–0.33)
Minor SITI only	396	53	343	86.6	0.78 (0.54–1.12)
Thoracic injury without clinical significance only	1,018	109	909	89.3	1.00 [Reference]
Patients with suspected injury on CXR not confirmed on CCT	329 (false-positive CXR)	329 (false-positive CXR)	0 (presuming CCT is criterion reference)	0
Percentage of all patients (n=5,912)	N/A	N/A	1,454	24.6

N/A, Not applicable; SITI, significant intrathoracic injury, whether major or minor, all of which had some intervention.

^*SITI is defined as receiving some intervention.

^†2,048=Total patients with suspicion of injury on CXR (eg, widened mediastinum) whether confirmed on CCT or not, plus actual injuries identified on CCT.