Table 6 Predictors of 30-day mortality.

Parameter	Regression coefficient	Standard error	Odds radio	95% CI lower value	95% CI upper value	Multivariate p value	Univariate p value
Constant	−8.961	7.338	0.000			0.222
Age (years)	0.030	0.016	1.030	0.999	1.062	0.056	0.003
BMI	0.110	0.053	1.117	1.007	1.238	0.036	0.008
ISS	0.113	0.027	1.120	1.062	1.180	0.000	<0.001
Admission SBP (mmHg)	−0.014	0.008	0.986	0.971	1.001	0.064	<0.001
Admission Temperature (°C)	−0.022	0.201	0.978	0.659	1.451	0.912	<0.001
Admission Hb (mmol/L)	0.136	0.196	1.146	0.780	1.684	0.488	<0.001
Admission Base excess (mmol(L)	−0.095	0.078	0.910	0.780	1.060	0.226	<0.001
Admission Lactate (mmol/L)	0.086	0.119	1.089	0.863	1.375	0.471	<0.001
RBC/24 h	−0.030	0.050	0.971	0.881	1.070	0.550	<0.001
Noradrenaline/24 h (µg/kg/min)	2.384	0.866	10.843	1.988	59.155	0.006	<0.001
Time to surgery (hours)	−0.272	0.170	0.762	0.546	1.063	0.109	0.008
ICU LOS (days)	−0.172	0.034	0.482	0.788	0.899	0.000	<0.001
Male gender	−0.392	0.538	0.676	0.236	1.939	0.467	0.022
ASA >2	0.658	0.680	1.931	0.509	7.319	0.333	0.023
Admission 8 am–7 pm	0.760	0.579	2.138	0.687	6.651	0.189	0.047
AIS head >3	1.822	0.477	6.186	2.427	15.770	0.000	<0.001
Out-of-hospital airway management	0.268	0.507	1.308	0.484	3.533	0.597	<0.001
Total incidence of complications	−0.731	0.607	0.481	0.147	1.582	0.228	0.084

BMI; body mass index, ISS; injury severity score, SBP; systolic blood pressure, Hb; hemoglobin, RBC; red blood cell transfusion, OR; operating room, ICU LOS; intensive care unit length of stay, ASA; American Society of Anesthesiologists classification, AIS; abbreviated injury severity, CI; confidence interval. Logistic regression including data from n = 514 patients with multiple trauma; Hosmer-Lemeshow goodness-of-fit test: p = 0.176; Nagelkerke’s R2: 0.744; model chi-square: 283.8, p < 0.001. Sensitivity 72.2% (56/76) correctly predicted descendents, Specificity 98.2% (429/437) correctly predicted survivors; italicized p values indicate statistical significance (p < 0.05).

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