Table 4 Cost analysis of each strategy (individual vs. pooled) by country, by assay (MTB/RIF vs. Ultra) to test 1,000 presumptive TB patients
Assay | Country | Testing Strategy | Proportion positive | Savings (%) | Cost per test (International $) | Nb of cartridges | Bacteriologically confirmed cases | Cost per bacteriologically confirmed TB case (International $) |
|---|---|---|---|---|---|---|---|---|
Xpert MTB/RIF | Lao PDR | Individual | 12.1% | Reference | 40.91 | 1,000 | 121 | 338.07 |
Pooling | 36.7% | 37.9% | 25.42 | 617 | 115 | 221.04 | ||
Nigeria | Individual | 14.4% | Reference | 31.50 | 1,000 | 144 | 218.77 | |
Pooling | 40% | 34.6% | 20.61 | 650 | 136 | 151.53 | ||
Xpert ULTRA | Lao PDR | Individual | 11.1% | Reference | 40.91 | 1,000 | 111 | 368.53 |
Pooling | 33.3% | 41.2% | 24.04 | 583 | 111 | 216.56 | ||
Nigeria | Individual | 12.0% | Reference | 31.50 | 1,000 | 146 | 215.77 | |
Pooling | 28.8% | 45.7% | 17.10 | 538 | 136 | 125.77 | ||
Brazil | Individual | 24% | Reference | 25.69 | 1,000 | 240 | 107.06 | |
Pooling | 62.6% | 12.1% | 22.57 | 876 | 232 | 97.30 | ||
Overall | Individual | 34.10 | 249.64 | |||||
Pooling | 21.95 | 162.44 |