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Table 1 Characteristics of all patients, by time period.

From: Association between a single-pass whole-body computed tomography policy and survival after blunt major trauma: a retrospective cohort study

 

Control Cohort (2000 to 2002)

Intervention Cohort

(2002 to 2007)

P value¶

  

Pan-scan not performed

Pan-scan

performed

 
 

n = 313

n = 223

n = 608

 

Mean age, years*

43.5 (20.7)

49.6 (21.9)

43.9 (19.3)

< 0.001

Sex†

   

0.815

   Male

234 (75)

169 (76)

448 (74)

 

   Female

79 (25)

54 (24)

160 (26)

 

Mean GCS*

10.5 (4.9)

12.3 (4.1)

11.2 (4.6)

< 0.001

Mean heart rate, bpm

86. 7 (19.9)

85.2 (18.9)

84.6 (17.9)

0.327

Mean systolic pressure, mmHg

126.4 (26.7)

130.5 (28.3)

120.1 (24.9)

< 0.001

Mean hemoglobin, mmol/l*

7.2 (1.9)

8.2 (1.7)

7.5 (1.7)

< 0.001

Mean thrombocyte count × 109 /l*

189 (81)

204 (103)

191 (66)

0.065

Mean prothrombin time, per cent*

71.3 (27.1)

82.1 (23.9)

74.8 (20.3)

< 0.001

Mean no. of PRB transfusions*

9.3 (10.9)

7.9 (9.2)

7.1 (6.6)

0.134

Mean ISS*

26.4 (12.2)

21.3 (8.5)

28.3 (11.8)

< 0.001

ISS quartiles†

   

< 0.001

   First, 0 to 18

88 (28)

105 (47)

132 (22)

 

   Second, 19 to 25

111 (35)

89 (40)

187 (31)

 

   Third, 26 to 33

36 (12)

13 (6)

110 (18)

 

   Fourth, 34 to 75

78 (25)

16 (7)

179 (29)

 

ISS ≥ 16†

282 (90)

216 (97)

578 (95)

0.001

ED time, min

    

Mean*

144.7 (115.8)

95.7 (63.1)

83.5 (49.2)

< 0.001

Median‡

106 (60 - 213)

80 (48 - 133)

74 (52 - 103)

< 0.001

Head injuries†

210 (67)

143 (64)

330 (54)

< 0.001

Mean AISHead*

3.5 (1.2)

4.1 (0.8)

3.6 (1.1)

< 0.001

Chest injuries†

163 (52)

66 (30)

407 (67)

< 0.001

Mean AISChest*

3.3 (1.0)

3.5 (0.9)

3.7 (0.8)

< 0.001

Abdominal trauma†

61 (19)

19 (9)

124 (20)

< 0.001

Mean AISAbdomen*

3.4 (1.0)

4.1 (1.1)

3.2 (1.1)

0.004

Spine fractures†

130 (42)

56 (25)

342 (56)

< 0.001

Mean AISSpine*

3.3 (1.2)

3.4 (1.0)

3.2 (1.1)

0.197

Mean length of ICU stay, days*

16.2 (17.0)

9.9 (10.6)

16.2 (17.3)

< 0.001

Mean no. of surgical procedures*

4.1 (2.9)

2.9 (3.5)

4.1 (3.9)

0.001

ARDS†

68 (22)

19 (9)

120 (20)

< 0.001

MOF†

8 (3)

22 (10)

119 (20)

< 0.001

Sepsis†

12 (4)

2 (1)

21 (3)

0.081

Mortality†

73 (23)

33 (15)

48 (8)

< 0.001

  1. Values in parentheses are *standard deviations, †percentages or ‡interquartile ranges.
  2. P values for continuous variables were computed using analysis of variance, and for binary variables using the χ2 test. For skewed distributions and medians, the Kruskal-Wallis test was employed. AIS, Abbreviated Injury Scale; ARDS, respiratory distress syndrome; ED, emergency department; GCS, Glasgow Coma Scale; ISS, Injury Severity Score; ICU, intensive care unit; MOF, multiple organ failure; PRB, units of packed red blood.
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Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine

ISSN: 1757-7241