Figure 2.

LASSO Cox regression model construction and survival analysis. (A) λ selection by 10-fold cross-validation. The shrinkage curve of elastic net in selecting signature lncRNA. Adjusting parameter (lambda) screening in the LASSO regression model, lambda with lowest partial likelihood deviance were selected. Solid vertical lines represent partial likelihood deviance ± standard error. The dotted vertical lines are drawn correspond to the optimal values by minimum criteria and 1- standard error criteria. The value of 0.6457363 was chosen for λ by 10-fold cross-validation with the minimum criteria. (B) Survival curve of low- and high-risk groups stratified by their risk score. LASSO, Least Absolute Shrinkage and Selection Operator; lncRNA, long noncoding RNA.