40-491) | 50-691) | Total1) | |
---|---|---|---|
Recall for further assessment rate [per 1000 screens] and number of recalls 2) | 14.6 (273) | 13.2 (318) | 13.9 (591) |
Intermediate screening test recommended in six months | 18.9 (354) | 12.1 (292) | 15.1 (646) |
Screening result unknown3) | 2.8 (52) | 1.9 (46) | 2.3 (98) |
Biopsy rate [per 1000 screens] | 8.7 (163) | 9.1 (220) | 8.9 (383) |
Cancer detection rate [per 1000 screens] | 2.7 (51) | 4.2 (102) | 3.6 (153) |
Invasive | 2.5 (46) | 3.9 (93) | 3.3 (139) |
In situ | 0.3 (5) | 0.4 (9) | 0.3 (14) |
Proportion of in situ cases | 9.8% | 8.8% | 9.2% |
Ratio screening breast cancer detection rate vs. background incidence rate 4) | 2.1 | 2.0 | 2.0 |
PPV assessment | 18.7% (51/273) | 32.1% (102/318) | 25.9% (153/591) |
PPV biopsy | 31.3% (51/163) | 46.4% (102/220) | 39.9% (153/383) |