Fig. 2. Age as a risk factor for systemic reactions. Boxplot demonstrating the age distribution of patients with/without SRs. The median (25th, 75th) ages were 7 (6, 12) in patients with SR and 15 (8, 33) in those without, and the differences were statistically significant (all P<0.001). Line inside the box=median. Bottom of the box=25th; top of the box=75th percentile. 
=outliers. Upper whisker=maximum observation below the upper fence (75th percentile +1.5 Q); lower whisker=minimum observation above the lower fence (25th percentile -1.5 Q); Q=quartile range.
