Fig. 1

The moderated mediation model including oral health, dietary satisfaction, BMI and depressive symptoms. CMIN = 76.394, DF = 26, CMIN/DF = 2.938, GFI = 0.984, AGFI = 0.953, IFI = 0.939, CFI = 0.936, RMSEA = 0.05, SRMR = 0.037. Notes: c = direct effect, c’ = total effect; B=Unstandardized regression coefficient; SE = Standard error; BMI = Body Mass Index; CI = confidence interval; CMIN = Chi-Square; DF = Degree of freedom; GFI = Goodness of fit index; AGFI = Adjusted goodness of fit index; IFI = Incremental fit index; CFI = Comparative fit index; RMSEA = Root mean square error of approximation; SRMR = Standardized root mean square residual; The covariates were age, gender, education, marital status, income, number of disease and self-rated health