“We examined whether the association between depression and worse self-care varied as a function of the type of self-care assessed (i.e., composite measure of multiple self-care behaviors, medical appointment attendance, diet, medication adherence, exercise, self-monitoring of blood glucose, foot care).”
“The results of this meta-analysis, based on 47 independent samples totaling over 17,000 patients, suggest that depression is significantly associated with nonadherence to diabetes self-care with an effect of moderate strength relative to the range of effect sizes typical in the social sciences.”