| Characteristic | PZA-sensitive cases (%) | PZA-resistant cases (%) | x2 | P value | |
| Sputum smear* | Conversion | 128 (86.5) | 36 (78.3) | 1.816 | 0.178 |
| Non-conversion | 20 (13.5) | 10 (21.7) | |||
| Lesion elimination# | Total lesion elimination | 75 (50.7) | 21 (45.7) | 0.279 | 0.597 |
| Partial elimination | 41 (27.7) | 14 (30.4) | |||
| Non-elimination | 32 (21.6) | 11 (23.9) | |||
| Shrunk cavities | 95 (75.4) | 18 (48.7) | 9.623 | 0.002 | |
| Non-shrunk cavities | 31 (24.6) | 19 (51.3) | |||