Table 3.

Subgroup regression analysis of delta SI to in-hospital mortality and early mortality.

	Mortality		Early mortality
	aOR (95% CI)	p-value	aOR (95% CI)	p-value
Age
≥65	1.59 (1.11–2.29)	0.012	1.66 (1.06–2.38)	0.013
18-64	1.02 (0.71–1.34)	0.875	1.65 (0.91–2.98)	0.098
Comorbidity≥2	1.09 (0.76–1.56)	0.657	1.45 (0.76–2.79)	0.260
Vital sign
Triage SBP≥100	1.05 (0.74–1.49)	0.802	1.19 (0.65–2.17)	0.572
Triage SBP <100	1.03 (0.65–1.61)	0.908	2.14 (1.21–3.77)	0.009
Triage SI ≥ 0.9	0.95 (0.64–1.39)	0.773	1.62 (1.01–2.60)	0.038
Triage SI <0.9	1.07 (0.82–1.39)	0.641	1.13 (0.73–1.74)	0.594
Diagnosis
Sepsis	1.54 (1.13–2.11)	0.007	1.46 (1.03–1.94)	0.033
Respiratory failure	0.97 (0.85–1.11)	0.645	1.06 (0.86–1.29)	0.596
Heart failure	1.22 (0.86–1.73)	0.260	1.64 (0.90–3.00)	0.108

^*logistic regression analysis performed by adjusting confounding factors include age, sex, comorbidities and SAPS.

SI, Shock Index; SBP, Systolic Blood Pressure; aOR, adjusted Odds Ratio.