Table 3.

Optimal cutoff values and sensitivity and specificity of Lac/Alb, Lac, and NLR for predicting myocardial injury in elderly patients with SCAP.

	Cutoff value	Sensitivity	Specificity	Positive likelihood ratio	Negative likelihood ratio
Lac/Alb	1.21	60.00 (95% CI: 38.7–78.9)	78.72 (95% CI: 64.3–89.3)	2.82	0.51
Lac (mmol/L)	1.9	100.00 (95% CI: 86.3–100.0)	40.43 (95% CI: 26.4–55.7)	1.68	0.00
NLR	18.6	84.00 (95% CI: 63.9–95.5)	59.57 (95% CI: 44.3–73.6)	2.08	0.27

CI = confidence interval, Lac = lactate, Lac/Alb = lactate/albumin ratio, NLR = neutrophil/lymphocyte ratio , SCAP = severe community-acquired pneumonia.