TNNT2 and atrial fibrillation: To achieve a significant result at a power level of 0.8, the total sample size was calculated as 80 patients for diabetes mellitus as a risk factor for poor outcomes in the infratentorial group; 86 for arterial hypertension; 68 for atrial fibrillation; 64 for ischemic heart disease; 64 for dichotomized hs-cTnT; and 52 for dichotomized eGFR in the supratentorial group.