Fig. 1
a Comparison of the QTc intervals with respect to the clinical risk factors of the CHA2DS2-VASc score was expressed as bar graphs. Vascular disease includes prior a myocardial infarction, peripheral artery disease, and aortic plaque. b, c Observational association between the QTc interval and a stroke/TIA. b Association of the QTc interval according to that with or without a stroke/TIA. c Association of a stroke/TIA based on the quartile value of the QTc interval (ms)