CM, cow’s milk; HR, hazard ratio; CI, confidence interval. Using Pearson’s correlation analysis, the correlation coefficient between casein- and CM-sIgE levels exceeded 0.99; therefore, the casein-sIgE level was excluded from the Cox regression analysis. ^†Univariate Cox regression analysis. ^‡ Multivariate Cox regression analysis; adjusted for the significant items in the univariate analysis. ^§ Hazard ratio per ten-fold increase in total IgE or cow’s milk-specific IgE.