Similarities were found in the percentages of sex, race and ethnicity, education levels, family income–poverty ratio, smoking status, hypertension, depression, antipsychotic medication, high cholesterol, stroke, and the levels of ALT, AST, TC, LDL-C, HDL-Cand the score of IRT, DRT, AFT among four groups (all p > 0.05). This evidence concerns the gene GPT and depressive disorder.