Fig. 2From: A novel nomogram for predicting the prolonged length of stay in post-anesthesia care unit after elective operationLASSO regression analysis for factors selection. A selection of the tuning parameter (λ) by using 10-fold via minimum and 1-SE criteria. B Non-zero coefficients selection by using the 10-fold cross-validation. LASSO, least absolute shrinkage, and selection operatorBack to article page