Fig. 4From: Co-expression network analysis identifies potential candidate hub genes in severe influenza patients needing invasive mechanical ventilationConfirmation of hub genes. A Boxplots in the training set were applied to validate the hub genes' expression levels. B ROC analysis in the training set was used to validate the diagnostic utility of the hub genes. C Boxplots in the test set were used to verify the hub genes' expression levels, and (D) ROC analysis in the test set was utilized to establish the hub genes' diagnostic valueBack to article page