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Table 1 Patient demographics

From: Effects of a radiation dose reduction strategy for computed tomography in severely injured trauma patients in the emergency department: an observational study

 

Control group (n = 33)

Intervention group (n = 85)

p

Age (yrs)

41.9 (36.1-47.6)

47.1 (43.8-51.1)

0.131

Male (n, %)

24 (72.7)

62 (72.9)

0.981

Mechanism (n, %)

  

0.265

   Blunt

28 (84.8)

78 (91.8)

 

   Penetrating

5 (15.2)

7 (8.2)

 

ISS

22.8 (19.2-26.5)

25.2 (22.6-27.9)

0.330

ISS severity (n, %)

  

0.533

   Moderate (9-15)

7 (21.2)

11 (12.9)

 

   Severe (16-24)

12 (36.4)

34 (40.0)

 

   Very severe (≥ 25)

14 (42.4)

40 (47.1)

 

RTS

6.9 (6.5-7.3)

6.5 (6.2-6.9)

0.138

Head injury (n, %)

  

0.366

   Mild (GCS 13-15)

21 (63.6)

43 (50.6)

 

   Moderate (GCS 9-12)

4 (12.1)

10 (11.8)

 

   Severe (GCS 3-8)

8 (24.2)

32 (37.6)

 

Hemodynamic status

   

   MAP (mmHg)

85.9(78.4-93.3)

92.7(85.4-99.5)

0.182

   HR (beats/min)

92.2(84.6-99.7)

88.6(82.2-95.8)

0.544

   Shock (n, %)

5 (15.2)

12 (14.1)

0.886

Initial disposition (n, %)

  

0.962

   Operation

13 (39.4)

29 (34.1)

 

   Admission

9 (27.3)

25 (29.4)

 

   Transfer

7 (21.2)

20 (23.5)

 

   Death

4 (12.1)

11 (12.9)

 

ED LOS (hours)

14.1 (9.2-19.1)

14.3 (8.9-19.8)

0.962

ICU LOS (days)

4.6 (2.7-6.4)

5.6 (3.7-7.5)

0.512

Hospital LOS (days)

26.2 (17.8-34.5)

31.0 (22.7-39.3)

0.495

Mortality (n, %)

7 (21.2)

14 (16.5)

0.546

  1. Data are means (95% confidence interval) unless noted.
  2. ISS: injury severity score; RTS: revised trauma score; GCS: Glasgow Coma Scale; MAP: mean arterial pressure; HR: heart rate; ED LOS: emergency department length of stay; ICU: intensive care unit