Make definitive files of a) total number of patients that have Afib in UKBB b) European patients with AFib in UKBB c) European patients with AFib with first degree relatives removed

[jackosullivanoxford]

[jackosullivanoxford]

It would be useful to go through coding and see if we have missed any patients with AFib. For instance, this study (PMID: 28416818) used the following below codes to identify patients with AFib in UKBB:

"We defined atrial fibrillation as reported during a baseline interview; presence of a procedure code for cardioversion, atrial flutter or fibrillation ablation, or atrioventricular node ablation; presence of a billing code for atrial fibrillation; or atrial fibrillation reported on a death record (the specific codes used in the definition are available upon request)"