Additional file 1: Table S1. of Medication overuse headache in Europe and Latin America: general demographic and clinical characteristics, referral pathways and national distribution of painkillers in a descriptive, multinational, multicenter study

Headache-related healthcare system utilization. Number of consultations per year are categorizes into 4 groups, and shown as percentage of the student population. 1Missing data on 3 patients from Germany and 5 patients from Spain, respectively. (PDF 55 kb)