GPT and diabetes mellitus: At chi-square analysis, incidence of diabetes progressively increased with greater ALT quartiles (27/265, 30/261, 39/230, and 40/249, respectively, p = 0.068), although not significantly; when only 1st and 3rd ALT or 1st and 4th quartiles were compared, the difference was statistically significant (p = 0.0272 and p = 0.048, respectively, Table 2).