In addition, the occurrence of stroke was positively correlated with the presence of the C allele of the g.117803515C > T—NOS1 (bootstrap crude OR 1.32; 1.09–1.61 95% CI; SP 0.436), whereas the C/T genotype and T allele (bootstrap crude ORs 0.61; 0.46–0.81 95% CI; SP 0.949 and 0.76; 0.62–0.92 95% CI; SP 0.602, respectively) demonstrated a protective effect against this disease. The gene discussed is NOS1; the disease is stroke disorder.