relative mortality in those with atrial fibrillation compared with those without it , was 1.92 for all causes , 1.82 for death from cardiovascular causes ( excluding stroke ) and 3.78 for deaths from stroke , after adjustment by proportional hazards regression for confounding effects of age , sex , history of a myocardial infarction , an abnormal electrocardiogram , angina , cholesterol level systolic blood pressure and quetelet 's index ( weight/height2 ) .
C0004238
atrial
C0007226
cardiovascular