Evidencio validations - Evidencio
External validation in severely injured patients (injury severity score ≥16)
EMTRAS was tested in a model validation set with severely injured patients who were admitted alive to the ER from 2004 and 2005. Severe injury was defined as an injury severity score (ISS) of at least 16.
Research authors: Marcus R. Raum, Maarten W.N. Nijsten, Mathijs Vogelzang, Frank Schuring, Rolf Lefering, Bertil Bouillon, Dieter Rixen, Edmund A.M. Neugebauer, Henk J. ten Duis.
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Discrimination

Rows included 0
C-index 0.83
Brier score Not specified
Scaled Brier score Not specified

Classification plot

Not specified

Calibration

Regression coefficient 0
Intercept 0
Hosmer-Lemeshow GOF Not specified
 

Calibration plot

Histogram

Not specified

Decision curve

Not specified
Comparison
Original study population: 11533
Validation study population: 3314

Categorical characteristics

Name Subset / Group Nr. of patients Validation P-Value
Gender Female 3068 911 0.3167
Male 8465 2403
Mortality Alive 9007 2688 0.0002
Death 2526 626

Continuous characteristics

Name Mean SD Unit Plot
Original Validation Age 42.3
44.8
19.2
19.6
years
Original Validation Injury severity score 30.1
35.6
12.5
14.8
ISS
Original Validation Glasgow Coma Scale 10
4.9
GCS
Original Validation Base excess -3.3
5.4
mmol/l
Original Validation Prothrombin time 73.9
23.6
%
Original Validation Systolic blood pressure 119
32
mmHg
Original Validation Heart rate 91
24
bpm
Original Validation Hemoglobin saturation 97
6
%
Original Validation Respiratory rate 14.9
5.4
bpm
Original Validation Hemoglobin 11.0
3.2
g/dL
Original Validation Platelet count 190
82
x10^9/l
Original Validation APTT 38.8
24.1
sec
Original Validation Lactate 5.3
8.6
mmol/l
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