Risk factors for surgical site infection after craniotomy for meningioma resection in a tertiary hospital in China

Figure 1 Variable selection by Least Absolute Shrinkage and Selection Operator regression (representative results from imputed dataset 1). A: Least Absolute Shrinkage and Selection Operator coefficient profiles across the regularization path; B: Cross-validation curve for tuning the penalty parameter; 7 variables were selected under the minimum criterion and 4 under the 1-standard-error criterion. Final model variables were determined by selection frequency across all 10 imputed datasets (Supplementary Figure 1). lambda.min: Lambda. minimum; lambda.1se: Lambda. 1-standard-error; NLR: Nutritional risk index.