When looking for a correlation between the causes and risk factors: large - artery atherosclerosis was associated with hyperlipidemia (p = 0.047, OR = 6.18) and Migraine (p = 0.01, OR = 6.18); cardioembolism was associated with atrial fibrillation (p = 0.003, OR = 36.33); small - vessel disease was associated with hypertension (p = 0.02, OR = 2.84) and smoking in men (p = 0.01, OR = 4.0); other determined was associated with hypercoagulate state (p = 0.001, OR = 115); undetermined cause was associated with hypertension (p = 0.002, OR = 0.4).