Table 4 Efficacy results for Xpert, MGIT 960 culture, and TB-DNA compared to AFB-negative results
Test | Sensitivity (CI) | Specificity (CI) | FPV(CI) | FNV(CI) |
|---|---|---|---|---|
Xpert | 75% (6/8) | 53.6% (15/28) | 11.8% (2/17) | 68.4% (13/28) |
(0.086–1.605) | (0.908–1.832) | (0.352–1.088) | (0.615–7.470) | |
culture | 100% (1/1) | 25% (5/20)** | 0% (0/5)*** | 75% (15/20) |
– | (0.940–1.211) | – | (0.582–0.966) | |
TB-DNA | 100% (4/4) | 38.9% (7/18)* | 0% (0/7)*** | 61.1% (11/18) |
– | (1.005–1.850) | – | (0.432–0.883) |