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. 2020 Oct;152(4):378–385. doi: 10.4103/ijmr.IJMR_2539_19

Table V.

Performances of Truenat and Xpert in comparison with culture among smear-positive samples

Truenat Culture Total Xpert Culture Total


Positive Negative Positive Negative
Positive 648 65 713 Positive 602 62 664
Negative 49 15 64 Negative 95 18 113
Total 697 80 777 Total 697 80 777
Sensitivity: 93% (90.8-94.8%) Sensitivity: 86.4% (83.6-88.8%)
Specificity: 18.8% (10.9-29%) Specificity: 22.5% (13.9-33.2%)

Sensitivities of Truenat and Xpert for detection of MTB among smear-positive samples in comparison with culture were 93 and 86.4%, respectively. The difference in sensitivity was significant (P<0.001) while specificities were 18.8 and 22.5%, and the difference was not significant