Comparison of DNA Extraction Protocols and Molecular Targets to Diagnose Tuberculous Meningitis

Table 4

Culture and real time PCR results for 100 samples included on the study.

		SP	PPV	NPV
Culture	46%	100%	100%	77%	81%	0,52 (Weak)
INS6110	91%	97%	94%	95%	95%	0,89 (Strong)
MPB64	34%	97%	86%	73%	75%	0,36 (Minimal)
hsp65 KDa	46%	97%	89%	77%	79%	0,48 (Weak)

Note. : sensitivity; SP: specificity; PPV: positive predictive value; NPV: negative predictive value; : accuracy; : Kappa index.