Table 3.

Comparison of diagnostic accuracy of the quick sequential organ failure assessment (qSOFA) score, systemic inflammatory response syndrome (SIRS) criteria, and shock index (SI) for in‐hospital mortality

Patients	n	Cut‐off value	Sensitivity, %	Specificity, %
All	4,827	qSOFA ≥2	52.3	69.9
		SIRS (w/o WBC) ≥2	54.7	59.0
		SI ≥0.9	32.3	82.8
Infection	820	qSOFA ≥2	66.0	62.7
		SIRS (w/o WBC) ≥2	70.0	40.5
		SI ≥0.8	58.0	60.5
Trauma	639	qSOFA ≥2	31.6	80.2
		SIRS (w/o WBC) ≥2	31.6	72.1
		SI ≥0.8	21.1	84.4
Others	3,368	qSOFA ≥2	50.9	69.6
		SIRS (w/o WBC) ≥2	53.2	61.0
		SI ≥0.9	31.9	83.2

Cut‐off values were selected as the point of the highest sum of sensitivity and specificity (the Youden index).

WBC, white blood cell count.