Table 4 Performance in triage purposes and screening purposes at sensitivity of 90%
Purpose | TB score as threshold | N of CXR selected (% of 8,386) | N of sputum exams* (% of 8,386) | N of Xpert-positive (% of 130) | N of CXR with "abnormality suggestive of TB" (% of 615) | N of CXR with "any abnormality in the lung fields" (% of 1551) |
|---|---|---|---|---|---|---|
Triage | 0.5340 | 1770 (21.1) | 1246 (14.9) | 125 (96.2) | 554 (90.1) | 1246 (80.3) |
Screening | 0.2835 | 3107 (37.0) | 1396 (16.6) | 127 (97.7) | 594 (96.6) | 1396 (90.0) |