TABLE 1.

Comparison of three methods for determining the drug resistance of M. tuberculosis isolates

Drug(s)No. of rifampin-resistant isolates found to be resistant to indicated drug(s) by:
Proportion methodDirect heteroduplex analysisUHG analysis
Rifampin + rifapentine + rifabutin + rifalazil515048
Rifampin + rifapentine + rifabutin111
Rifampin + rifapentine + rifalazil101
Rifampin + rifapentine353031
Rifampin997
Total979088