Performance of different algorithms for Xpert tests saved and cases missed in Bangladesh
| CAD score | People tested on Xpert n | Xpert tests saved % | MTB+ cases missed n (%) | |
| Direct Xpert testing | ||||
| All referral groups | NA | 17 066 | NA | NA |
| Private providers | NA | 12 340 | NA | NA |
| NTP facilities | NA | 2316 | NA | NA |
| Walk-ins | NA | 2410 | NA | NA |
| Senior (≥55 years) | NA | 4485 | NA | NA |
| Middle age (25–55 years) | NA | 8991 | NA | NA |
| Young adult (≤25 years) | NA | 3590 | NA | NA |
| Radiologist→Xpert | ||||
| All | NA | 8428 | 51 | 249 (9) |
| Private providers | NA | 6662 | 46 | 200 (10) |
| NTP facilities | NA | 1114 | 52 | 28 (7) |
| Walk-ins | NA | 652 | 73 | 21 (11) |
| Senior (≥55 years) | NA | 2754 | 39 | 58 (10) |
| Middle age (25–55 years) | NA | 4090 | 55 | 128 (10) |
| Young adult (≤25 years) | NA | 1584 | 56 | 63 (8) |
| CAD4TB→Xpert | ||||
| Set CAD to match radiologist sensitivity | ||||
| All | 63 | 10 912 | 36 | 249 (9) |
| Private providers | 64 | 8388 | 32 | 195 (10) |
| NTP facilities | 60 | 1452 | 37 | 37 (9) |
| Walk-ins | 56 | 1195 | 50 | 18 (10) |
| Senior (≥55 years) | 82 | 3129 | 30 | 53 (9) |
| Middle age (25–55 years) | 61 | 5391 | 40 | 123 (10) |
| Young adult (≤25 years) | 56 | 2110 | 41 | 79 (10) |
| Set CAD to reduce Xpert tests by ∼50% | ||||
| All | 80 | 8488 | 50 | 473 (18) |
| Private providers | 84 | 6226 | 50 | 423 (21) |
| NTP facilities | 75 | 1162 | 50 | 68 (17) |
| Walk-ins | 56 | 1195 | 50 | 18 (10) |
| Senior (≥55 years) | 94 | 2220 | 51 | 144 (26) |
| Middle age (25–55 years) | 74 | 4500 | 50 | 194 (15) |
| Young adult (≤25 years) | 66 | 1785 | 50 | 105 (13) |
MTB+: Mycobacterium tuberculosis-positive; CAD4TB: computer automated detection of TB software; NTP: National TB Program.