Table 5 Absolute (n) and relative (%) frequency of pain free and pain relief episodes at 2 and 24 h in menstrually (n = 49) and non-menstrually related (n = 233) migraine attacks treated with frovatriptan. p refers to the statistical significance of the difference between the two types of migraine attacks

From: Efficacy of frovatriptan in the acute treatment of menstrually related migraine: analysis of a double-blind, randomized, cross-over, multicenter, Italian, comparative study versus rizatriptan