Statistical analysis
Predictors of developing severe FPIES reactions and multiple trigger FPIES were explored using logistic regression with odds ratio (OR) estimates and 95% confidence intervals (CI) presented. Age at resolution of FPIES was described using the Kaplan-Meier method and predictors tested using proportional hazards regression models, with hazard ratios (HR) and CI presented. Pearson correlation coefficients were used to examine correlations among individual food triggers. Analysis was performed using SAS software version 9.4 (SAS Institute Inc., Cary, NC) and GraphPad Prism 8 (GraphPad Software, La Jolla, Calif).