Table 3.
Performances of real‐time PCR assays for detection of nontuberculous mycobacteria depending on culture results
| PCR Assay | NTM growth | NTM no growth | Sensitivity %, (95% CI) | Specificity %, (95% CI) | |||
|---|---|---|---|---|---|---|---|
| PCR + | PCR − | PCR + | PCR − | ||||
| All | AdvanSure | 18 | 2 | 1 | 122 | 90.0 (68.3‐98.8) | 99.2 (95.6‐100) |
| PowerChek | 18 | 2 | 2 | 121 | 90.0 (68.3‐98.8) | 98.4 (94.3‐99.8) | |
| Smear + | AdvanSure | 14 | 0 | 0 | 37 | 100 (76.8‐100) | 100 (90.5‐100) |
| PowerChek | 14 | 0 | 0 | 37 | 100 (76.8‐100) | 100 (90.5‐100) | |
| Smear − | AdvanSure | 4 | 2 | 1 | 85 | 66.7 (22.3‐95.7) | 98.8 (93.7‐100) |
| PowerChek | 4 | 2 | 2 | 84 | 66.7 (22.3‐95.7) | 97.7 (91.9‐99.7) | |
CI, confidence interval; NTM, nontuberculous mycobacteria.