Table 1.
Estimated effect of early breast cancer (BC) detection, in the 40-80 year age interval, with different screening strategies.
| Periodicity | Age interval for screening exams | Effect of early detection | ||
|---|---|---|---|---|
| MR (%) | YLG per woman screened |
YLG per BC detected |
||
| Annual | 40-74 | 29.8 | 0.222 | 1.874 |
| Biennial | 40-74 | 22.9 | 0.165 | 1.387 |
| Annual | 45-74 | 28.9 | 0.205 | 1.727 |
| Biennial | 45-74 | 22.3 | 0.152 | 1.283 |
| Annual | 50-74 | 27.4 | 0.180 | 1.515 |
| Biennial | 50-74 | 21.3 | 0.134 | 1.127 |
| Annual | 40-69 | 27.6 | 0.219 | 1.845 |
| Biennial | 40-69 | 21.2 | 0.162 | 1.369 |
| Annual | 45-69 | 26.7 | 0.201 | 1.697 |
| Biennial | 45-69 | 21.2 | 0.151 | 1.272 |
| Annual | 50-69 | 25.3 | 0.176 | 1.485 |
| Biennial | 50-69 | 19.6 | 0.132 | 1.109 |
Relative BC mortality reduction (MR) and Years of Life Gained (YLG). Catalonia, cohorts born in 1955-59.