| Gene mutation codon | MDR-TB n (%) | Pre-XDR or XDR-TB n (%) | Total | p-value |
| rpoB |
|
|
|
|
| No mutation rpoB 445 rpoB 450 rpoB 464 rpoB 483 rpoB 490 rpoB 493 rpoB 507 rpoB 508 | 4 (16.7) 3 (12.5) 5 (20.8) 6 (25.0) 2 (8.3) 5 (20.8) 2 (8.3) 7 (29.2) 8 (33.3) | 2 (20.0) 5 (50.0) 1 (10.0) 0 (0.0) 2 (20.0) 2 (20.0) 2 (20.0) 2 (20.0) 1 (10.0) | 6 (17.7) 8 (23.5) 6 (17.7) 6 (17.7) 4 (11.8) 7 (20.6) 4 (11.8) 9 (26.5) 9 (26.5) | 0.584 0.031 0.416 0.100 0.334 0.670 0.334 0.462 0.165 |