Relationship of outcome to in vitro drug susceptibility
| Drug susceptibility | No of strains | No (%) failures of treatment and relapses |
| Rifampicin | ||
| Sensitive | 58 | 8 (14%) |
| Intermediate | 3 | 1 (33%) |
| Resistant | 113 | 24 (21%) |
| Ethambutol | ||
| Sensitive | 101 | 15 (15%) |
| Intermediate | 10 | 3 (30%) |
| Resistant | 63 | 15 (24%) |
| Isoniazid | ||
| Sensitive | 1 | 0 |
| Intermediate | 0 | 0 |
| Resistant | 83 | 12 (14%) |