Table 1.

Data sources and time window of cardioembolic stroke features

High-risk sources	ICD codes	Procedure codes	Echocardiogram Report
Mechanical or bioprosthetic cardiac valve*	✓	✓
Mitral stenosis*	✓
Atrial fibrillation (including lone atrial fibrillation)*	✓
Left atrial/atrial appendage thrombus†			✓
Intracardiac thrombus*	✓
Sick sinus syndrome*	✓
Recent myocardial infarction (<4 weeks)‡	✓	✓
Left ventricular thrombus*	✓
Dilated cardiomyopathy*	✓
Akinetic left ventricular segment*			✓
Atrial myxoma*	✓
Infective endocarditis*	✓
Medium-risk sources
Mitral valve prolapse*	✓		✓
Mitral annulus calcification *	✓		✓
Left atrial turbulence (smoke)†			✓
Delayed emptying velocity†			✓
Atrial septal aneurysm*	✓		✓
Patent foramen ovale*	✓		✓
Atrial flutter*	✓
Nonbacterial thrombotic endocarditis†	✓
Congestive heart failure*	✓
Hypokinetic left ventricular segment*			✓
Myocardial infarction§	✓	✓

^*Before or up to 90d after stroke;

^†90d before or after stroke;

^‡<=4 weeks prior to stroke;

^§between 6 months to 4 weeks prior to stroke