Fig. 2
From: Triptan use in elderly over 65 years and the risk of hospitalization for serious vascular events
Study design of the self controlled case series. All subjects with an event of interest (first hospitalisation for an ischemic event) and exposed to triptans before the event were selected (from the exposed cohort). They were observed from the beginning of the cohort (01/07/2011) or when aged 65, to the end (31/12/2014). The rate of the event of interest was compared between risk periods (yellow) following triptan exposure (number of days in DDD plus 10 days) and baseline periods (dark blue)