Note that risk in this app is shown as a reference and is not generally used for making medical decisions. There is variability in the risk of stroke reported in different studies. Numbers used in this app are median and range of all studies reviewed in the reference below (after excluding some outlier numbers)
Wide Variation in Reported Rates of Stroke Across Cohorts of Patients With Atrial Fibrillation. (Circulation, 135, 208-219:2017)
AHA 2019 guidelines for Management of Patients with Atrial Fibrillation recommend oral anticogulants for score of >=2 for men and >=3 for women (COR 1, LOE A) (Circulation 140,e125-e151:2019)
DISCLAIMER: This app is designed to be used by medical care providers. Users are advised to seek a doctor’s advice in addition to using this app and before making any medical decisions.