<prompt> International prognostic index for lymphomas includes the following prognostic factors, except -Stage of diseaseNumber of extralymphatic sites involvedLDHHemoglobin and albumin  <response>: The prognosis of patients with NHL is best assigned using the International Prognostic Index IPI .This is a powerful predictor of outcome in all subtypes of NHL.Patients are assigned on IPI score based on the presence or absence of five adverse prognostic factors:-Age 60 yearsElevated serum LDHPerformance status 2 ECOG or 70 Karnofsky 1 site of extranodal extra lymphatic involvementAnn Arbor Stage III or IV 