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Table 3 Performance of Xpert assay for detection of TB against LJ culture (n = 332)

From: Light-emitting diode fluorescent microscopy and Xpert MTB/RIF® assay for diagnosis of pulmonary tuberculosis among patients attending Ambo hospital, west-central Ethiopia

Characteristics Value (%) 95% CI
Sensitivity 93.3 81.7–98.6%
Specificity 98.0 95.6–99.2%
PPV 87.5 74.8–95.3%
NPV 98.9 97.0–99.8%
  1. PPV positive predictive value, NPV negative predictive value, CI confidence interval