GPT and chronic kidney disease: Variables selected for predicting in-hospital mortality included gender, race, age, co-infections, readmission within the past 30 days, abnormal CT scan or CXR, medical history including CKD, malignancy, CHF, cerebrovascular disease, dementia, prior PPI, NSAID, or beta-blocker use, WBCs, platelet count, albumin, T Bili, ALT, and AST.