Table 2

Differences between LMU and DGU trauma centres regarding time and survival.

Group

LMU

DGU

Number

160

4.657

Characteristic

n or % [95%CI] or mean ± SD

n or % [95%CI] or mean ± SD

Diagnostics

FAST

N

125/160

2.676/4.657

%

78.1

57.5

Time (min)

4.3 ± 3.3

8.7 ± 14.1

p-value¹

<0.001

Chest x-ray

N

111/160

2.464/4.657

%

69.4

52.9

Time (min)

8.1 ± 4.0

16.0 ± 19.9

p-value¹

<0.001

WBCT

N

138/160

1.223/4.657

%

86.3

26.3

Time (min)

20.7 ± 17.6

36.3 ± 28.3

p-value¹

<0.001

Outcome

TRISS

N

95/160

2.246/4.657

%

59.3 [95%CI 51.8-67.0]

48.2 [95%CI 46.8-49.7]

Observed mortality n

15/95

404/2246

Observed mortality rate %

15.8 [95%CI 8.5-23.1]

18.0 [95%CI 16.4-19.6]

Expected mortality rate by TRISS (%)

21.4

19.5

SMR

0.74 [95%CI 0.40-1.08]

0.92 [95%CI 0.84-1.01]

p-value²

0.24

0.10

RISC

N

157 (160)

4.115/4.657

%

98.1 [95%CI 96.0-100.0]

88.4 [95%CI 87.4-89.3]

Observed mortality n

30/157

878/4115

Observed mortality rate %

19.1 [95%CI 13.0-25.3 ]

21.3 [95%CI 20.1-22.6]

Expected mortality rate by RISC %

27.6

21.4

SMR

0.69 [95%CI 0.47-0.92]

0.995 [95%CI 0.94-1.06]

p-value²

0.043

0.88

We analyzed 4.817 patients, comparing 160 patients from our university hospital (LMU) to 4.657 trauma patients from other trauma centres (DGU) participating in the registry. FAST Focused Assessment with Sonography in Trauma; WBCT whole-body Computed Tomography; TRISS Trauma Revise Injury Severity Score; RISC Revised Injury Severity Classification; SMR Standard Mortality Ratio. p: χ² test or Mann- Withney- U test (two sided); p¹ refers to the difference between LMU and the other hospitals; p² refers to the difference between expected and observed mortality.

Kanz et al. Journal of Trauma Management & Outcomes 2010 4:4   doi:10.1186/1752-2897-4-4