Table 5

Univariate and multivariate predictors of hospital mortality

Variable	Univariate	95% CI	p Value	Multivariate	95% CI	p Value
Variable	OR	95% CI	p Value	OR*	95% CI	p Value
Total cohort	1.00†
Temperature Fever >38°C	0.997	0.849 to 1.48	0.414	–	–	–
Temperature <36°C	1.24	0.896 to 1.73	0.190	–	–	–
RR ≥30	1.79	1.34 to 2.38	<0.001	1.43	1.28 to 2.27	<0.001
Nausea/vomiting	1.74	0.566 to 0.963	0.026	–	–	–
Lactate>4 mmol/L	1.80	1.77 to 3.00	<0.001	1.63	1.10 to 2.89	<0.001
Circulatory compromise	2.01	1.51 to 2.70	<0.001	1.78	1.34 to 2.75	<0.001
Severe sepsis identified at triage	0.812	0.697 to 0.946	0.007	0.891	0.776 to 947	<0.007
Not identified at triage	1.20	1.05 to 1.43	0.007	–
ATS 1	1.71	1.21 to 2.41	0.002	1.55	1.09 to 2.35	<0.005
ATS 2	1.04	0.804 to 1.35	0.061	–	–	–
ATS 3	0.142	0.103 to 0.194	<0.001	0.167	0.118 to 0.245	<0.001
ATS 4	0.084	0.061 to 0.115	<0.001	0.088	0.060 to 0.118	<0.001
Appropriate antimicrobial administration‡	0.838	0.434 to 1.72	0.086	–

No deaths registered for ATS category 5—omitted.
LR χ² (8 df)=219.92, p<0.000, Hosmer–Lemeshow, p=0.297. C statistic=0.776.
*Backwards stepwise multivariate logistic regression adjusted for age, SOFA score, APACHE II score and shock.
†Reference value hospital mortality 29%.
‡In the emergency department.
ATS, Australasian Triage Scale at emergency department Triage; LR, Likelihood ratio.