Figure 2.

Clinical feature selection using the LASSO regression model.

Notes: (A) Choose the best parameter (λ) in the LASSO model and use the lowest standard five-fold cross-validation. By using the minimum standard and the minimum standard of 1 SE (1-SE standard), a dotted vertical line was drawn at the optimal value. (B) LASSO coefficient profiles of the 6 features. A vertical line was drawn at the value selected using five-fold cross-validation, where the best lambda resulted in 6 features with non-zero coefficients.

Abbreviations: LASSO, least absolute shrinkage and selection operator; SE, standard error.