Figure 2. PAED median scores. Placebo group versus Gabapentin groups in children who had more than three prior similar medical procedures. Patients who received 15 mg/kg gabapentin syrup (15 mg/kg GABA) and underwent less than three prior medical procedures had no significant difference in median PAED scores from those with more than three prior medical procedures of the same group (P = 0.488). We found higher PAED median scores in subgroups that had more than three prior medical procedures within the placebo and 30 mg/kg GABA groups. Δ > Three prior medical procedures versus < three prior medical procedures in the placebo group (P value = 0.006). * > Three prior medical procedures versus < three prior medical procedures in the 15 mg/kg GABA group (P value = 0.488). # > Three prior medical procedures versus < three prior medical procedures in the 30 mg/kg GABA group (P value = 0.026). Statistical tests used were the median test for two independent samples and the Kruskal-Wallis test.