Table 3

Diagnostic performance of individual scores for 30-day and 72-hour mortality

	Score (n)	Death (%)	Sensitivity	Specificity	PPV	NPV
Death by 30 days
CURB-65 (n=605)*	<2 (273)	46 (16.8)	0.80	0.61	0.57	0.83
	≥2 (332)	188 (56.6)	0.80	0.61	0.57	0.83
	<3 (434)	125 (28.8)	0.47	0.83	0.64	0.71
	≥3 (171)	109 (63.7)	0.47	0.83	0.64	0.71
NEWS2 (n=730)	<5 (215)	46 (21.4)	0.83	0.37	0.43	0.79
NEWS2 (n=730)	≥5 (515)	224 (43.5)	0.83	0.37	0.43	0.79
qSOFA (n=730)	<2 (596)	196 (32.9)	0.27	0.87	0.55	0.67
qSOFA (n=730)	≥2 (134)	74 (55.2)	0.27	0.87	0.55	0.67
Death within 72 hours
CURB-65 (n=605)	<2 (273)	8 (2.9)	0.86	0.48	0.15	0.97
	≥2 (332)	49 (14.8)	0.86	0.48	0.15	0.97
	<3 (434)	22 (5.1)	0.61	0.75	0.20	0.95
	≥3 (171)	35 (20.5)	0.61	0.75	0.20	0.95
NEWS2 (n=730)	<5 (215)	5 (2.3)	0.92	0.31	0.10	0.98
NEWS2 (n=730)	≥5 (515)	54 (10.5)	0.92	0.31	0.10	0.98
qSOFA (n=730)	<2 (596)	34 (5.7)	0.42	0.84	0.19	0.94
qSOFA (n=730)	≥2 (134)	25 (18.7)	0.42	0.84	0.19	0.94

*Analysis restricted to those with consolidation on chest radiograph.
CURB-65, Confusion, Urea, Respiratory Rate, Blood Pressure and Age Above or Below 65 Years; NEWS2, National Early Warning Score 2; NPV, negative predictive value; PPV, positive predictive value.