<prompt>  A male patient 59 year old complains of multiple swellings in the neck , fever, and weight loss. General examination reveals painless lymph node enlargement in the neck and on blood investigation anaemia is revealed. Serum albumin is 32 gml. Lymph node biopsy shows Reed Sternberg cells.The 5-year rate of overall survival for this patient , according to The Hasenclever prognostic index for advanced Hodgkin lymphoma is:90747059 