Statistical analyses
Characteristics of the population were described using median (± interquartile range) for quantitative variables, and number (percentage) for qualitative variables. Comparison between “probable histaminergic AE” and “probable ACEi-AE” groups was performed using Fisher’s exact test for qualitative variables and Mann-Whitney’s test for quantitative variables. Statistical analyses were carried out using Graph Pad Prism v8 software. Significance was set at p <0.05.