Fig. 3

Past experience with preventive medication for migraine. Results for (a) prior regular use of preventive medication, (b) satisfaction with preventive medication, burden of cost, and withdrawal due to side effects, and (c) side effects experienced by those who withdrew are presented for each age group (and MIDAS grade group in (A)) and for overall respondents, the latter inclusive of all age groups. Results are presented as percentage of respondents. MIDAS = Migraine Disability Assessment; GI = Gastro-intestinal; N = Number of patients. * Respondents who did not take preventive medication regularly only took it when they were experiencing a headache. Those who took preventive medication regularly did so even in the absence of a headache