Evaluation of migraine frequency, pain severity and days off work according to the presence of an anatomic variant

CharacteristicsRight anatomic variantLeft anatomic variant
AbsentPresentPAbsentPresentP
n4571-4540-
Migraine frequency (days)10.78 ± 2.9712.32 ± 3.140.013*10.78 ± 2.9712.13 ± 3.550.001**
Days off work (days)3.14 ± 0.886.16 ± 3.070.001**3.14 ± 0.885.13 ± 3.800.001**
Pain severity VAS9.04 ± 1.669.55 ± 0.750.2199.04 ± 1.6610.00 ± 0.000.001**

VAS: visual analog scale. Kruskal Wallis test indicates statistically significant differences, *: P < 0.05; **: P < 0.01; -: not applicable