Table 3.

Performance parameters for classification methods compared with the R&J classification

	ML Flow	WHO classification	Bacterial index
Sensitivity	87.2	99.2	94.7
Specificity	70.6	45.7	91.0
PPV	80.8	72.0	93.7
NPV	79.7	97.5	92.3
LR+	2.97	1.82	10.5
LR−	0.18	0.02	0.06

LR+ = positive likelihood ratio; LR− = negative likelihood ratio; NPV = negative predictive value; PPV = positive predictive value; WHO = World Health Organization.