Table.
Resistant cases according to pDST | Sensitivity | Specificity | Negative predictive value | Positive predictive value | Accuracy | |
---|---|---|---|---|---|---|
Isoniazid | 41 | 85·4% (70·8–94·4) | 99·8% (99·2–100·0) | 99·1% (98·1–99·6) | 97·2% (83·1–99·6) | 99·0% (97·9–99·6) |
Rifampicin | 15 | 73·3% (44·9–92·2) | 99·6% (98·6–99·9) | 99·4% (98·6–99·7) | 78·6% (53·2–92·2) | 98·9% (97·8–99·6) |
Ethambutol | 12 | 50·0% (21·1–78·9) | 99·6% (98·7–99·9) | 99·1% (98·5–99·5) | 66·7% (36·1–87·6) | 98·7% (97·5–99·4) |
Pyrazinamide | 21 | 57·1% (34·0–78·2) | 100·0% (99·4–100·0) | 98·7% (97·9–99·2) | 100·0% (73·5–100·0) | 98·7% (97·5–99·4) |
Data are n or % (95% CI). pDST=phenotypic drug susceptibility testing.