Table 1.

Percentage of patients for each injury that was an occult injury and proportions who had interventions of surgery (major intervention), or inpatient pain control or additional observation greater than 24 hours (minor intervention), with ORs for each injury comparing intervention for injuries found on chest CT only versus those found on chest radiography and CCT.

		Imaging That Identified Injury, No. (%)			OR (95% CI) for Intervention for Injury Observed on CCT Only vs CXR and CCT
Injury Type	Total Injured, No. (%)	CXR and CCT	CCT Only	OI, %
>2 rib fractures	1,120	448	672	60.0
Surgery, major	1	0	1	NCR	NCR (undefined 0/448 surgeries)
Pain control/observation >24 h, minor	314 (28.0)	131 (29.2)	183 (27.2)	58.3	0.91 (0.69–1.19)
No intervention	805 (71.9)	317 (70.8)	488 (72.6)	60.6	1.00 [Reference]
Sternal fractures	281	12	269	95.7
Surgery, major	3 (1.1)	1 (8.3)	2 (0.7)	66.7	0.07 (0.004–5.01)
Pain control/observation >24 h, minor	83 (29.5)	4 (33.3)	79 (29.4)	95.2	0.74 (0.18–3.53)
No intervention	195 (69.4)	7 (58.3)	188 (69.9)	96.4	1.00 [Reference]
Great vessel injury	18	6	12	66.7
Surgery, major	7 (38.9)	4 (66.7)	3 (25.0)	42.9	0.17 (0.01–2.08)
Observation >24 h, minor	11 (61.1)	2 (33.3)	9 (75.0)	81.8	1.00 [Reference]
Ruptured diaphragm	6	1	5	83.3	NCR (all 6 patients had operative repair)
Scapular fracture*	47	20	27	57.4
Surgery, major	1 (2.1)	1 (5.0)	0	NCR	NCR
Pain control/observation >24 h, minor	38 (80.9)	18 (90.0)	20 (74.1)	52.6	0.16 (0.003–1.48)
No intervention	8 (17.0)	1 (5.0)	7 (25.9)	87.5	1.00 [Reference]
Thoracic spine fracture*	66	5	61	92.4
Surgery, major	7 (10.6)	1 (20.0)	6 (9.8)	85.7	0.47 (0.04–26.99)
Pain control/observation >24 h, minor	55 (83.3)	4 (80.0)	51 (83.6)	92.7	1.00 [Reference]
No intervention	4 (6.1)	0	4 (6.6)	NCR

CXR, Chest radiograph; CCT, chest computed tomography; OI, occult injury; NCR, not clinically relevant because of none or few interventions.

^*Data only from NEXUS Chest CT study (n=1,503).