Table 2B.
MISCAN-Colon model: Results of the base-case and the sensitivity analyses for the Hemocult II strategy, the fecal immunochemical test (FIT) strategy and the new test strategy. The results are expressed per 1000 50-year-olds.
| Strategy | No of CRC cases | Proportion of early stage CRC cases (UICC I and II), % | Reduction in CRC cases, % | No of CRC deaths | Reduction in CRC deaths, % | Discounted LYG | Discounted total costs, 1000 $ |
|---|---|---|---|---|---|---|---|
| No screening | 64.7 | 51 | -- | 27.1 | -- | -- | 2,404 |
|
| |||||||
|
Base-case analyses
| |||||||
| Hemoccult II | 41.0 | 74 | 37 | 9.7 | 64 | 81 | 2,445 |
| FIT | 31.8 | 80 | 51 | 6.6 | 76 | 96 | 2,667 |
| New test | 42.2 | 83 | 35 | 7.9 | 71 | 91 | 2,979 (2,728) a |
|
| |||||||
|
Sensitivity analyses
| |||||||
|
Test characteristics: Best case values (see Table 1A)
| |||||||
| Hemoccult II | 33.8 | 75 | 48 | 7.9 | 71 | 93 | 2,072 |
| FIT | 28.0 | 79 | 57 | 6.0 | 78 | 103 | 2,246 |
| New test | 42.2 | 83 | 35 | 7.7 | 71 | 93 | 2,979 (2,727) a |
|
| |||||||
|
Test characteristics: Worst case values (see Table 1A)
| |||||||
| Hemoccult II | 37.9 | 71 | 41 | 9.8 | 64 | 75 | 2,672 |
| FIT | 31.8 | 78 | 51 | 7.0 | 74 | 90 | 2,813 |
| New test | 42.1 | 82 | 35 | 8.1 | 70 | 90 | 2,979 (2,728) a |
|
| |||||||
|
Biennial screening interval
| |||||||
| Hemoccult II | 49.4 | 68 | 24 | 13.8 | 49 | 62 | 2,469 |
| FIT | 40.6 | 76 | 37 | 9.3 | 66 | 84 | 2,590 |
| New test | 52.1 | 78 | 19 | 11.3 | 58 | 78 | 2,895 (2,734) a |
|
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|
80% adherence with screening
| |||||||
| Hemoccult II | 47.8 | 68 | 26 | 13.5 | 50 | 64 | 2,448 |
| FIT | 40.1 | 72 | 38 | 10.3 | 62 | 79 | 2,614 |
| New test | 49.7 | 76 | 23 | 11.8 | 57 | 74 | 2,896 (2,674) a |
|
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|
50% adherence with screening
| |||||||
| Hemoccult II | 52.3 | 64 | 19 | 16.2 | 40 | 50 | 2,456 |
| FIT | 45.4 | 70 | 30 | 12.5 | 54 | 67 | 2,571 |
| New test | 54.8 | 72 | 15 | 14.3 | 47 | 62 | 2,825 (2,667) a |
CRC = colorectal cancer; FIT = fecal immunochemical test; LYG = life-years gained compared with no screening
Number in parentheses represents the result of the sensitivity analyses for the respective scenario when the unit cost of the new test was lowered from $24 to $0 (i.e., these are the total costs of the new test strategy when subtracting the costs attributable to the screening test itself.