Table 1

First-line drug susceptibility profile of the M. tuberculosis isolates in the present study

Drug-resistant profilecNew cases (n = 321)Previously treated cases (n = 59)χ2P
No.%No.%
Monodrug resistance
    INH103.135.10.590.44
    RIF10.311.70.29a
    STR165.0711.94.150.04b
    EMB20.6000.71a
Multidrug resistance
    INH+RIF103.1610.26.150.013b
    INH+RIF+STR/+EMB195.9813.64.410.036b
Poly-drug resistance
    INH+STR/+EMB206.2915.35.760.016b
    RIF+STR/+EMB41.211.70.57a
    STR+EMB10.3000.84a
  • a P value from Fisher's exact test.

  • b P < 0.05.

  • c INH, isoniazid; RIF, rifampin; STR, streptomycin; EMB, ethambutol; +, and; /, or.