GPT and metabolic syndrome: According to the importance of predictive variables in the three models established, it was found that the top four variables were age, ALT, BMI and UA, indicating that these four factors played a very important role in the development of metabolic syndrome.In the process of independent variable screening, age, income, BMI, family history of diabetes, salt intake, physical exercise and other factors were the influencing factors of metabolic syndrome, which was consistent with previous results [28, 29].