You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is International prognostic index for lymphomas includes the following prognostic factors except and explain in detail?
Hemoglobin and albumin The international prognostic index (HI) designed as prognostic factor model for aggressive NHL also appears to be useful for predicting the outcomes of: - Clinical features included in the IPI that are independently predictive of survival include the following : - Age --> Younger than 60 years versus older than 60 years LDH level -> Within the reference range versus elevated. Performance --> Eastern cooperative oncology group (ECOG) grade status (0-1) versus 2-4 Ann Arbor --4 Stage I-II versus 111-IV stage Number of - Zero to 1 versus more than 1 extranodal sites Good prognostic factors Poor prognostic factors Age 60 or below Stage I or II No lymphoma outside of l ymph nodes or lymphoma in only 1 area outside of lymph nodes Performance status able to function normally Serum LDH is normal Age above 60 Stage III or IV Lymphoma is in more than 1 organ of the body outside the lymph nodes Performance status : Needs a lot of help with daily activities Serum LDH is elevated