RBP4 and familial dilated cardiomyopathy: Although age and gender were shownin other studies to influence the levels of RBP4 [46, 47, 48], in our study the ageof DCM group has a higher level than NDCM group, in order to eliminate thisinterference factor, we adjusted HR by multivariate logistic regression analyses,the RBP4 level was independently predictive of DCM in diabetes.