Comparative analysis of 70 sputum samples with N-PCR, Culture and AFB with clinical diagnosis.

NOTE. Clinical diagnosis, Categorization of patients and controls as describe in methods; PPV, positive predictive value; NPV, negative predictive value; Sensitivity, TP/(TP+ FN) x 100, where T is true, F is false, P is positive, and N is negative; Specificity, TN/(TN+ FP) x 100; N-PCR, 116 bp amplicon generated by Nested-PCR assay specific for Mycobacterium tuberculosis; Culture, AFB Growth detected on LJ, 7H9 and/MGIT; AFB, acid fast bacilli.