Table 1 Size, node status and grade of screen-detected and interval cancers, England, NHS Breast Screening Programme, women aged 47/50 or over.
Factor | Category/aspect | Screen-detected cancers, April 2015–March 2018 (3 years) | Interval cancers, 2015–18 (4 years) |
|---|---|---|---|
Size (invasive only) | 0 to ≤20 mm | 30,046 | 9237 |
>20 to ≤50 mm | 8270 | 9966 | |
>50 mm | 834 | 1673 | |
Mean | 16.4 | 25.0 | |
Standard Deviation (SD) | 12.2 | 17.2 | |
Number unknown | 1602 | 5246 | |
Positive nodes (invasive only) | 0 | 31,968 | 12,316 |
1–3 | 6275 | 4862 | |
4+ | 1484 | 1636 | |
Unknown | 1025 | 7308 | |
Grade (invasive only) | 1 | 9941 | 2442 |
2 | 22,729 | 13,134 | |
3 | 7799 | 9599 | |
Unknown | 283 | 947 | |
NPI (invasive only) | Mean | 3.5 | 4.2 |
Standard deviation (SD) | 1.0 | 1.1 | |
Median | 3.3 | 4.3 | |
Quartile 1 | 3.1 | 3.3 | |
Quartile 3 | 4.2 | 4.7 | |
Number unknown | 1824 | 7044 | |
% unknown | 4.5% | 27.0% |
