Table 1:

Summary of baseline characteristics for the study population.

Patient characteristics	All patients (n=176)	CT missed Bowel injury (n=36)	No missed Bowel injury (n=140)	p
Age (years)	40 [27–58]	36 [26–51]	41 [27–58]	0.356
Female	56 (32%)	14 (39%)	42 (30%)	0.321
Prior abdominal inflammation	41 (23%)	15 (42%)	26 (19%)	0.007
Prior abdominal surgery	29 (16%)	8 (22%)	21 (15%)	0.317
Open abdominal surgery	21 (12%)	7 (19%)	14 (10%)	0.148
Injury severity score	26 [16–35]	21 [13–34]	27 [17–36]	0.112
Abdominal injury score	3 [2–4]	3 [2–3]	3 [2–4]	0.073
Glasgow coma scale score	15 [13–15]	15 [13–15]	15 [11–15]	0.164
Intubated in field	36 (20%)	5 (14%)	31 (22%)	0.357
Intubated in trauma bay	23 (13%)	4 (11%)	19 (14%)	>0.999
Cardiac arrest in field	1 (1%)	0 (0%)	1 (1%)	>0.999
Cardiac arrest in trauma bay	1 (1%)	0 (0%)	1 (1%)	>0.999
Admission heart rate	98 [80–115]	97 [84–116]	98 [80–115]	0.915
Admission SBP (mmHg)	121 [103–140]	132 [112–142]	120 [102–139]	0.071
Admission lactate (mmol/L)	2.5 [1.9–3.8]	2.2 [1.8–4.0]	2.8 [2.0–3.7]	0.292
Admission Hb (g/dL)	12.3 [10.6–13.8]	12.5 [11.2–13.7]	12.3 [10.5–13.8]	0.338
Seatbelt sign	23 (13%)	6 (17%)	17 (12%)	0.579
FAST performed	111 (63%)	20 (56%)	91 (65%)	0.335
Negative	69 (39%)	15 (42%)	54 (39%)	0.850
Equivocal	6 (3%)	0 (0%)	6 (4%)	0.346
Positive	36 (20%)	5 (14%)	31 (22%)	0.356
DPA/DPL performed	8 (5%)	2 (6%)	6 (4%)	0.667
Negative	2 (1%)	1 (3%)	1 (1%)	0.368
Positive	6 (3%)	1 (3%)	5 (4%)	>0.999
FAST or DPA/DPL positive	38 (22%)	6 (17%)	32 (23%)	0.502
Abdominal X-ray performed	142 (81%)	29 (81%)	113 (81%)	>0.999
Normal	104 (59%)	24 (67%)	80 (57%)	0.345
Pelvic fracture	33 (19%)	5 (14%)	28 (20%)	0.480
Open book deformity	10 (6%)	2 (6%)	8 (6%)	>0.999

SBP: systolic blood pressure, Hb: hemoglobin, FAST: focused assessment with sonography for trauma, DPA: diagnostic peritoneal aspirate, DPL: diagnostic peritoneal lavage. Data are presented as median [interquartile range] or n (%).