Fig. 3From: Analysis of CT signs, radiomic features and clinical characteristics for delta variant COVID-19 patients with different vaccination statusa LASSO coefficient of the features are drawn via fivefold cross-validation, and 10 radiomic features were remained, with an optimized hyperparameter α of 0.039. b Through LASSO logical regression analysis, 10 optimal radiation features are determined to calculate the RadScore valueBack to article page