Table 3:
Sensitivity and specificity of swab testing by Xpert Ultra and MTB Ultima, based on samples from participants whose swabs were tested by both methods.
| Cohort | Sensitivity | Specificity | ||||||
|---|---|---|---|---|---|---|---|---|
| Xpert Ultra | MTB Ultima | Xpert Ultra | MTB Ultima | |||||
| N | Percent (95% CI) | N | Percent (95% CI) | N | Percent (95% CI) | N | Percent (95% CI) | |
| 1 | 63/89 | 70.8 (60.2, 80.0) | 58/89 | 65.2 (54.3, 75.0) | -* | -* | -* | -* |
| 2 | 107/136 | 78.7 (70.8, 85.2) | 103/136 | 75.7 (67.6, 82.7) | 62/62 | 100.0 (94.2, 100.0) | 60/62 | 96.8 (88.8, 99.6) |
| 1+2 | 170/225 | 75.6 (69.4, 81.0) | 161/225 | 71.6 (65.2, 77.4) | 62/62 | 100.0 (94.2, 100.0) | 60/62 | 96.8 (88.8, 99.6) |
*
Cohort 1 consisted entirely of confirmed TB-positive participants by sputum MRS