The Silesian Cardiovascular Database was created based on the agreement between Silesian Centre for Heart Diseases in Zabrze and the Regional Department of National Health Fund in Katowice in order to conduct analyses and prepare scientific elaborations on the group of patients with circulatory system diseases. Data elaboration and preparation for analyses was conducted by the Science Department of Silesian Centre for Heart Diseases and the Department of Biostatistics of Medical University of Silesia.