Table 2.
Number of mammography examinations in total and within Volpara Density Grade (VDG) categories (based on the available views)
| Total | VDG 1 | VDG 2 | VDG 3 | VDG 4 | |
|---|---|---|---|---|---|
| Total | |||||
| Screening examinations [N (%)] | 111,898 (100%) | 24,210 (21.6%) | 46,426 (41.5%) | 32,330 (28.9%) | 8932 (8.0%) |
| Screen-detected cancers (N) | 667 | 96 | 298 | 212 | 61 |
| Interval cancers (N) | 234 | 16 | 86 | 93 | 39 |
| False positives (N) | 1774 | 271 | 700 | 590 | 213 |
| True negatives (N) | 109,223 | 23,827 | 45,342 | 31,435 | 8619 |
| Only invasive tumors taken into account | |||||
| Screening examinations [N (%)] | 111,754 (100%) | 24,188 (21.6%) | 46,375 (41.5%) | 32,279 (28.9%) | 8912 (8.0%) |
| Screen-detected cancers (N) | 529 | 75 | 250 | 163 | 41 |
| Interval cancers (N) | 228 | 15 | 83 | 91 | 39 |
| False positives (N) | 1774 | 271 | 700 | 590 | 213 |
| True negatives (N) | 109,223 | 23,827 | 45,342 | 31,435 | 8619 |
| Only subsequent screening rounds | |||||
| Screening examinations [N (%)] | 94,665 (100%) | 22,146 (23.4%) | 40,664 (43.0%) | 25,777 (27.2%) | 6078 (6.4%) |
| Screen-detected cancers (N) | 521 | 86 | 249 | 152 | 34 |
| Interval cancers (N) | 203 | 16 | 81 | 80 | 26 |
| False positives (N) | 1170 | 214 | 491 | 366 | 99 |
| True negatives (N) | 92,771 | 21,830 | 39,843 | 25,179 | 5919 |