Table 3.
The estimated coefficients in the stepwise logistic regression and logistic LASSO regression with descriptors only
| Variable | Stepwise logistic | Logistic LASSO |
|---|---|---|
| Round | - | 0.364 |
| Nonparallel | 1.721 | 1.068 |
| Circumscribed | 1.474 | 0.992 |
| Angular | 1.384 | 0.384 |
| Microlobulated | - | -0.137 |
| Spiculated | 26.759 | 3.722 |
| Lesion boundary | 2.605 | 0.96 |
| Hypoechoic | - | 0.178 |
| Enhancement | - | 1.026 |
| Shadowing | - | -1.152 |
| Ductal change | - | 0.468 |
| Cooper's ligament changes | -40.348 | -1.526 |
| Edema | - | -1.194 |
| Architectural distortion | - | -1.295 |
| Macrocalcifications | -2.652 | -1.546 |
| Microcalcifications in the mass | -18.002 | -1.926 |
LASSO, least absolute shrinkage and selection operator.