In the train cohort , the best-fitting model consisted of age , diabetes mellitus , hypertension , current smoking , family history of coronary heart disease , white blood cell , creatinine , glycohemoglobin , atrial fibrillation , blood pressure , and cholesterol ( C-index = 0.757 [ 0.726-0 .788 ] and Akaike Information Criterion = 7207 ) .