Comparison of Xpert MTB/RIF Assay and other methods with reference standard in HIV-positives only.

aall culture results include speciation test results (for confirmation of Mtb or exclusion of Mtb in case when NTM present).breference standard for confirmed TB- diagnosis, defined as at least one positive culture (LJ or Mgit) confirmed as Mtb in speciation of per patient analysis; Mtb- negative defined as all cultures negative (LJ and Mgit) for Mtb in per patient analysis, speciation results included.Smear = Sputum smear microscopy after ZN-staining; LJ = Loewenstein-Jensen culture on solid media; Mgit = BACTEC MGIT 960 liquid culture.