Fig. 4

Frequency of response and reasons for failure of specific triptans. A Triptan responders. For each triptan, bars illustrate percentages of patients having responded to this triptan with respect to all patients who tried this triptan. B Reasons for triptan failure. Bars indicate percentages of patients having failed this triptan for tolerability or efficacy reasons with respect to all patients who tried this triptan, respectively. Note that a patient can have both tolerability and efficacy failure for the same triptan. Percentages for frovatriptan appear artificially low because > 50% of patients discontinued frovatriptan for other reasons. Complete data including discontinuation for other reason are given in Supplementary Table 4