Table 2.
Characteristics of the “most harmful” breast cancers and the “least harmful” breast cancers
| Variables | The “most harmful” cases (N=395) | The “least harmful” cases (N=399) | p-value |
|---|---|---|---|
| Breast cancer grade | p<0.001 | ||
| 1 | 35 (8.86%) | 128 (32.08%) | |
| 2 | 128 (32.41%) | 118 (29.57%) | |
| 3 | 171 (43.29%) | 75 (18.80%) | |
| 4 | 1 (0.25%) | 0 (0%) | |
| unknown | 60 (15.19%) | 78 (19.55%) | |
| Regional nodes | p<0.001 | ||
| negative | 111 (28.10%) | 201 (50.38%) | |
| positive | 156 (39.49%) | 0 (0%) | |
| unknown | 128 (32.41%) | 198 (49.62%) | |
| Breast cancer stage | p<0.001 | ||
| 0 | 8 (2.02%) | 26 (6.51%) | |
| I | 61 (15.44%) | 183 (45.86%) | |
| II | 83 (21.01%) | 0 (0%) | |
| III | 59 (14.94%) | 0 (0%) | |
| IV | 19 (4.81%) | 0 (0%) | |
| unknown | 165 (41.77%) | 190 (47.62%) | |
| Tumor size | p<0.001 | ||
| No mass | 3 (0.76%) | 0 (0%) | |
| Small (<30 mm) | 186 (47.09%) | 292 (73.18%) | |
| Large | 154 (38.99%) | 1 (0.25%) | |
| unknown | 52 (13.16%) | 106 (26.57%) | |
| ER | p<0.001 | ||
| positive | 256 (64.81%) | 285 (71.43%) | |
| negative | 85 (21.52%) | 1 (0.25%) | |
| borderline | 5 (1.27%) | 2 (0.50%) | |
| unknown | 49 (12.41%) | 111 (27.82%) | |
| PR | p<0.001 | ||
| positive | 169 (42.78%) | 250 (62.66%) | |
| negative | 166 (42.03%) | 0 (0%) | |
| borderline | 11 (2.78%) | 35 (8.77%) | |
| unknown | 49 (12.41%) | 114 (28.57%) | |