TABLE 3.

Correlation between two amplification assays for detection of M. tuberculosis and resolved results (culture and clinical diagnosis) among 552 respiratory specimens

AssayAcid-fast smear result (no. of samples)No. of samplesSensitivity (%)Specificity (%)Predictive value (%)
Resolved result positive (n = 60)Resolved result negative (n = 492)PositiveNegative
PCR positivePCR negativePCR positivePCR negative
RAPID BAP-MTBPositive (21)1621288.966.794.150.0
Negative (531)24181347657.197.364.996.4
Overall (552)40201447866.797.274.196.0
DTBPositive (21)1712194.433.389.550.0
Negative (531)17252146840.595.944.794.9
Overall (552)34262346956.795.359.694.7