GPT and cardiovascular disorder: The HR for all-cause mortality in patients with serum GGT levels ≥ 29.5 IU/L was 2.13 (95% CI 1.45–2.93, P<0.001) using group with serum GGT levels < 29.5 IU/L as the reference category after adjustment for age, gender, diabetes mellitus, cardiovascular diseases, serum albumin levels, serum AST levels, serum ALT levels, HBs Ag and HCV Ab.