| No breast cancer (N = 52,291) | Screen-detected cancer (N = 299) | Interval cancer (N = 224) | |||
---|---|---|---|---|---|---|
Age (years)a, median (IQR) | 56 | (51 ; 63) | 59 | (54 ; 64) | 55 | (50 ; 62) |
Number of screening rounds participated in, median (IQR) | 5 | (2 ; 8) | 7 | (4 ; 9) | 4 | (2 ; 7) |
Follow up (years)b, median (IQR) | 4.2 | (2.0 ; 6.2) | 3.8 | (2.1 ; 4.3) | 2.3 | (1.3 ; 4.0) |
VDG categories, n (%) | ||||||
 Category 1 | 10,458 | (20.0) | 46 | (15.4) | 12 | (5.4) |
 Category 2 | 21,276 | (40.7) | 143 | (47.8) | 72 | (32.1) |
 Category 3 | 15,856 | (30.3) | 89 | (29.8) | 100 | (44.6) |
 Category 4 | 4,701 | (9.0) | 21 | (7.0) | 40 | (17.9) |
Continuous density measures, median (IQR) | ||||||
 Dense volume (cm3)a | 57.7 | (42.8 ; 78.8) | 63.2 | (49.0 ; 83.5) | 67.7 | (48.9 ; 93.2) |
 Percent dense volume (%)a | 6.4 | (4.8 ; 9.8) | 6.5 | (5.0 ; 9.4) | 8.5 | (6.2 ; 13.6) |
 Nondense volume (cm3)a | 805.0 | (518.8 ; 1183.7) | 929.1 | (585.6 ; 1298.7) | 720.3 | (469.8 ; 1030.9) |
 Total breast volume (cm3)a | 866.8 | (573.9 ; 1256.8) | 994.0 | (648.6 ;1376.5) | 797.5 | (531.8 ; 1105.8) |