|
Model
|
Variables (all include age, gender, and Charlson score)
|
OR for ISS or NISS (95 % CI)
|
OR for polytrauma, anatomical definition, yes/no (95 % CI)
|
OR for RTS (95 % CI)
|
C-statistic
|
|---|
|
1a
|
ISS
|
1.17 (1.16, 1.18) **
|
-
|
-
|
0.887
|
|
1b
|
NISS
|
1.11 (1.10, 1.11) **
|
-
|
-
|
0.902
|
|
2a
|
ISS + RTS
|
1.12 (1.11, 1.14)**
|
-
|
0.40 (0.37, 0.43)**
|
0.918
|
|
2b
|
NISS + RTS
|
1.08 (1.08, 1.09)**
|
-
|
0.44 (0.41, 0.48)**
|
0.926
|
|
3a
|
ISS + polytrauma
|
1.18 (1.17, 1.20)**
|
0.60 (0.46, 0.79)**
|
-
|
0.887
|
|
3b
|
NISS + polytrauma
|
1.10 (1.10, 1.11)**
|
2.48 (1.98, 3.11)**
|
-
|
0.904
|
|
4a
|
ISS + RTS + polytrauma
|
1.13 (1.12, 1.15)**
|
0.69 (0.51, 0.93)*
|
0.40 (0.37, 0.43)**
|
0.918
|
|
4b
|
NISS + RTS + polytrauma
|
1.08 (1.07, 1.09)**
|
1.98 (1.53, 2.54)**
|
0.45 (0.42, 0.49)**
|
0.928
|
|
5a
|
ISS + GCS + SBP + polytrauma
|
1.14 (1.12, 1.15)**
|
0.70 (0.52, 0.93)*
|
-
|
0.913
|
|
5b
|
NISS + GCS + SBP + polytrauma
|
1.08 (1.07, 1.09)**
|
1.98 (1.54, 2.54)**
|
-
|
0.924
|
- *p < 0.05 **p < 0.001
-
Abbreviations: CI 95 % confidence interval, GCS Glasgow Coma Scale, ISS Injury Severity Score, NISS New Injury Severity Score, OR odds ratio, RTS Revised Trauma Score, SBP Systolic blood pressure
