Kaplan-Meier curve of the primary outcome in patients prescribed ACE inhibitor (ACEI) and angiotensin receptor blocker (ARB). Kaplan-Meier curve of the primary outcome in patients prescribed ACE inhibitor (ACEI) and angiotensin receptor blocker (ARB). Y-axis shows event rate rates and x-axis shows time in days after assembling the study cohort. Blue line depicts event rates for ACEI and red line depicts event rates for ARBs. Dennis Ko et al. Open Heart 2019;6:e001010 ©2019 by British Cardiovascular Society