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Table 2 Logistic Regression models P, A, P+A, B1, P+A+B1, B2, and P+A+B1+B2

From: The sequential trauma score - a new instrument for the sequential mortality prediction in major trauma*

Variable Regression coefficient β p value Odds ratio (eβ) CI 95%
Model P (Patients basic data)     
Age ≥ 60 1.234 < 0.001 3.44 2.57-4.60
constant -2.268 < 0.001 - -
Model A (Prehospital phase)     
Blood pressure < 90 mmHg 0.891 < 0.001 2.44 1.66-3.59
Pulse rate ≥ 120/min 0.554 0.018 1.74 1.10-2.76
GCS ≤ 8 on-scene 1.228 < 0.001 3.41 2.47-4.72
Anisocoria 1.164 < 0.001 3.20 2.28-4.51
Constant -2.911 < 0.001 - -
Model P + A     
Age = 60 1.653 < 0.001 5.23 3.72-7.34
Blood pressure < 90 mmHg 0.983 < 0.001 2.67 1.79-3.99
Pulse rate = 120/min 0,780 0.001 2.18 1.35-3.53
GCS = 8 on-scene 1.353 < 0.001 3.87 2.75-5.44
Anisocoria 1.311 < 0.001 3.71 2.59-5.32
Constant -3.566 < 0.001 - -
Model B1 (early trauma room phase)     
Oxygen saturation < 90% 0.748 0.011 2.11 1.18-3.77
Base excess > -8 1.306 < 0.001 3.69 2.47-5.23
Thromboplastin time < 50% 0.997 < 0.001 2.71 1.85-3.97
GCS ≤ 8 on trauma room admission 0.730 < 0.001 2.08 1.40-3.08
Anisocoria during trauma room phase 1.907 < 0.001 6.73 4.75-9.53
Constant -3.289 < 0.001 - -
Model P + A + B1     
Age ≥ 60 1.663 < 0.001 5.28 3.69-7.54
Blood pressure < 90 mmHg on-scene 0.602 0.008 1.83 1.17-2.85
GCS ≤ 8 on-scene 1.110 < 0.001 3.03 2.10-4.38
Anisocoria on-scene 0.700 0.004 2.01 1.25-3.25
oxygen saturation < 90% in trauma room 0.756 0.014 2.13 1.17-3.89
Base excess ≤ -8 1.316 < 0.001 3.73 2.40-5.80
Thromboplastin time < 50% 0.947 < 0.001 2.58 1.72-3.90
Anisocoria during trauma room phase 1.294 < 0.001 3.65 2.25-5.91
Constant -3.901 < 0.001 - -
Model B2 (late trauma room phase)     
CCCM in trauma room 1.074 0.003 2.93 1.45-5.90
Blood transfusion 0.432 0.018 1.54 1.01-2.21
Massive transfusion (≥ 10 PRBC) 0.850 0.001 2.34 1.41-3.86
AIShead ≥ 3 0.987 < 0.001 2.68 1.84-3.92
AISmax - < 0.001 - -
AISmax = 4, or: 0.549 0.048 1.73 1.00-3.28
AISmax = 5 2.483 < 0.001 12.00 6.63-21.64
Constant -4.235 < 0.001 - -
Model P + A + B1 + B2 (final model)     
Age ≥ 60 1.730 < 0.001 5.64 3.81-8.36
GCS ≤ 8 on-scene 0.752 < 0.001 2.12 1.42-3.20
Anisocoria on-scene 0.647 0.018 1.91 1.12-3.28
CCCM in trauma room 1.333 0.001 3.80 1.67-8.63
Massive transfusion (≥ 10 PRBC) 0.772 0.006 2.17 1.25-3.75
Base excess > -8 0.980 < 0.001 2.66 1.64-4.31
Thromboplastin time < 50% 0.711 0.003 2.04 1.28-3.23
Anisocoria during trauma room phase 1.251 < 0.001 3.45 2.03-6.01
AISmax - < 0.001 - -
AISmax = 4, or: 0.345 0.280 1.41 0.94-2.73
AISmax = 5 2.199 < 0.001 9.02 4.92-16.51
Constant -4.857 < 0.001 - -
  1. P Patients basic data; A Prehospital phase; B1 early trauma room phase; B2 late trauma room phase; GCS Glasgow outcome scale; CCCM closed chest cardiac massage; PRBC packed red blood cells; AIS abbreviated injury scale; Regression coefficient and ORs for the variable AISmax are not applicable due to the fact that this is a dummy variable. n = 2,354 patients, logistic regression (stepwise forward) with target variable mortality; variables sorted according to ATLS® A, B, C, D, E-criteria.