The most proportion of TTP cases occurred after 40 years, black race and femal sex. Congenital forms  occur in children.
Thrombotic thrombocytopenic purpura epidemiology and demographics
Idiopathic thrombocytopenic purpura epidemiology and demographics
Glanzmann's thrombasthenia epidemiology and demographics
Immune Thrombocytopenia epidemiology and demographics
Thrombotic thrombocytopenic purpura classification
Essential thrombocytosis epidemiology and demographics
Polycythemia vera epidemiology and demographics
Von Willebrand disease epidemiology and demographics