showed a trendP = 0.059
Similar data on medication overuse were unavailable from the US trial, but a secondary analysis was performed and showed a trend towards significant group differences ( P = 0.059). 56 In the European trial the responder rate of at least 50% in reduction of migraine days was significant for topiramate (22% vs 0% P = 0.012), but not in the US trial in which only the under 25% reduction in migraine/migrainous days responder rates showed significance. 57 Patients’ disability and quality of life evaluation results were different in both trials.