| Women Screened and Predictive Value of Interventions | Three times risk (1 in 830 per year) |
Ten times risk (1 in 250 per year) |
|---|---|---|
| Number of women participating in screening program | 10,000 | 10,000 |
| Screening interval | Every 2 years | Every 2 years |
| Number of screening tests carried out per year | 5,000 | 5,000 |
| Number of women recalled for further assessment per year who do not have primary ovarian cancer | 350 (7% of screens) | 350 (7% of screens) |
| Number of women undergoing surgery per year who do not have primary ovarian cancer | 65 (1.3% of screens) | 65 (1.3% of screens) |
| Maximum number of cancers detected by screening per year (if 100% sensitivity) | 12 | 40 |
| Number of additional 5-year survivors per year | 4.8 | 16 |
| Predictive value of recall (if 100% sensitivity) | 3.3% | 10.3% |
| Predictive value of diagnostic surgery (if 100% sensitivity) | 16% | 38.1% |
| * Adapted from Bell, et al., 1998.32 | ||