Table 2 Tumour and age characteristics in intensively screened and unscreened women
MRI/mammography | Mammography | No screening | Total | p value | |||
|---|---|---|---|---|---|---|---|
In situ (n = 33, 79.1 %) | Ductal | 10 (100) | 9 (100) | 14 (100) | 33 (100) | 1.0 | |
Lobular | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
Invasive breast cancer (n = 328, 90.9 %) | Type (n = 328) | Ductal | 24 (96.0) | 41 (95.3) | 244 (93.8) | 309 (94.2) | |
Lobular | 1 (4.0) | 1 (2.3) | 16 (6.2) | 18 (5.5) | |||
Mixed | 0 (0) | 1 (2.3) | 0 (0) | 1 (0.3) | |||
Age groups (n = 328) | <50 years | 17 (68.0) | 23 (53.5) | 168 (64.6) | 208 (63.4) | 0.330 | |
> = 50 Years | 8 (32.0) | 20 (46.5) | 92 (35.4) | 120 (36.6) | |||
Nodes (n = 148) | 0 | 18 (78.3) | 23 (60.5) | 34 (39.1) | 75 (50.7) | ||
1 | 2 (8.7) | 8 (21.1) | 17 (19.5) | 27 (18.2) | |||
2–3 | 1 (4.3) | 6 (15.8) | 17 (19.5) | 24 (16.2) | |||
4–5 | 0 (0) | 1 (2.6) | 9 (10.3) | 10 (6.8) | |||
6+ | 2 (8.7) | 0 (0.0) | 10 (11.5) | 12 (8.1) | |||
Missing | 2 | 5 | 173 | 180 | |||
Nodes (n = 148) | Negative | 18 (78.3) | 23 (60.5) | 34 (39.1) | 75 (50.7) | 0.001 | |
Positive | 5 (21.7) | 15 (39.5) | 53 (60.9) | 73 (49.3) | |||
ER-status (n = 211) | Negative | 3 (18.8) | 11 (27.5) | 34 (21.9) | 48 (22.7) | 0.698 | |
Positive | 13 (81.3) | 29 (72.5) | 121 (78.1) | 163 (77.3) | |||
Missing | 9 | 3 | 105 | 117 | |||
Grade (n = 237) | 1 | 1 (4.3) | 4 (10.3) | 6 (3.4) | 11 (4.6) | ||
2 | 11 (47.8) | 15 (38.5) | 63 (36.0) | 89 (37.6) | |||
3 | 11 (47.8) | 20 (51.3) | 106 (60.6) | 137 (57.8) | |||
Missing | 2 | 4 | 86 | 91 | |||
Grade (n = 237) | 1/2 | 12 (52.2) | 19 (48.7) | 69 (39.4) | 100 (42.2) | 0.338 | |
3 | 11 (47.8) | 20 (51.3) | 106 (60.6) | 137 (57.8) | |||
Censored (n = 328) | Alive | 25 (100) | 38 (88.4) | 222 (85.4) | 285 (86.9) | 0.112 | |
Dead | 0 (0.0) | 5 (11.6) | 38 (14.6) | 43 (13.1) | |||
Size (n = 186) | <10 | 9 (42.9) | 10 (26.3) | 9 (7.1) | 28 (15.1) | ||
10 – 19.9 | 8 (38.1) | 17 (44.7) | 55 (43.3) | 80 (43.0) | |||
20 – 29.9 | 3 (14.3) | 9 (23.7) | 36 (28.3) | 48 (25.8) | |||
30 – 39.9 | 0 (0.0) | 1 (2.6) | 12 (9.4) | 13 (7.0) | |||
40 – 49.9 | 0 (0.0) | 1 (2.6) | 7 (5.5) | 8 (4.3) | |||
> = 50 | 1 (4.8) | 0 (0.0) | 8 (6.3) | 9 (4.8) | |||
Missing | 4 | 5 | 133 | 142 | |||
Size (n = 186) | <20 | 17 (81.0) | 27 (71.1) | 64 (50.4) | 108 (58.1) | 0.006 | |
> = 20 | 4 (19.0) | 11 (28.9) | 63 (49.6) | 78 (41.9) |