Length of hospitalization: We used Cox regression to evaluate factors affecting the time to recovery (period of hospitalization) that are including ages less than 60 years (HR= 0.42 P= 0.002), hypercholesterolemia (HR=2.19 P= 0.031), ACE Inhibitors consumption (HR=1.87, P= 0.022), and type of infarction (non-lacunar; HR=0.51, P= 0.026 and lacunar; HR= 1.12, P= 0.815, reference category = normal). The gene discussed is ACE; the disease is Hypercholesterolemia.