Fig. 2

a Receiver operating characteristic (ROC) curve of SCF mRNA expression at cut off point (0.528) for discrimination of patients from control, Area under the curve (AUC) = 0.949, Standard error (SE) = 0.022, Confidence interval (CI) = 0.907–0.992. b ROC curve of SCF mRNA expression at cut off point (1.84) for discrimination of atopic patients from non-atopic patients, (AUC) = 0.887, SE = 0.039, CI = 0.811–0.964. c ROC curve of SCF mRNA expression at cut off point (1.395) for discrimination of severe asthmatic patients from mild asthmatic patients, (AUC) = 0.977, SE = 0.015, CI = 0.948–1.0. d Correlation between SCF mRNA expression and FEV1/FVC % in patients group. e Correlation between SCF mRNA expression and FEV1% predicted in patients group. f Correlation between SCF mRNA expression and serum IgE (Ku/ml). g Correlation between SCF mRNA expression and budesonide dose (mg/day)