Outcomes of patients with refractory adult chronic ITP. Under the category Stable Remission, the number of patients in each of the treatment groups who achieved remission is listed (group 0, spontaneous or uncertain cause; group 1, corticosteroids, danazol, dapsone, colchicine; group 2, azathioprine, oral cyclophosphamide, cyclosporine, mycophenolate-mofetil; group 3, high-dose cyclophosphamide or combination chemotherapy). Causes of death, as listed, are: ITP, death from thrombocytopenia-induced bleeding; ITP Rx, death related to complications of ITP therapy; other, death from causes unrelated to ITP.