Fig. 4.
Association of skin autofluorescence (a) and plasma advanced glycation end product (AGE) concentration (b), respectively, with carotid-femoral pulse wave velocity (cfPWV) according to the presence or absence of diabetes or prediabetes. A regression line was drawn. Correlation coefficients and their p values are given for diabetes or prediabetes (dots with full line) and normoglycemia (circles with dashed line), separately. The p value for the interaction between skin autofluorescence or plasma AGE concentration and the presence or absence of diabetes or prediabetes in relation to cfPWV is also given (pint).