GPT and steatosis: Other characteristics of patients (i.e., age, sex, cirrhosis, glucose baseline status, co-infected HIV, ethnics, high BMI, family history of diabetes, steatosis, HOMA-IR values, ALT levels, HCV-RNA, HCV genotype, liver fibrosis, naïve and experienced patients, types of DM, alcohol consumption, and treatment schedules) were recognized as confounding factors caused by the selection bias.