| histological classification | tumor | mammary gland | |||
| εr | σ | εr | σ | ||
| invasive ductal carcinoma | tuble forming | 60.5 | 1.66 | 50.1 | 1.4 |
| solid | 58.6 | 1.59 | 49.8 | 1.39 | |
| scirrhous | 58.9 | 1.65 | 52.4 | 1.47 | |
| others | 59.6 | 1.63 | 41.6 | 1.15 | |
| special | invasive lobular carcinoma | 58.4 | 1.63 | 43.0 | 1.19 |
| mucinous carcinoma | 65.3 | 1.93 | 45.9 | 1.3 | |
| others | - | - | 53.4 | 1.5 | |
| mixed connective tissue and epithelial tumors | fibroadenoma | 62.7 | 1.74 | 60.2 | 1.73 |
| phyllodes tumor | 61.7 | 1.61 | - | - | |
| total | 59.5 | 1.65 | 50.6 | 1.45 | |