Prevalence of Depression Among Adults With Diabetes Mellitus and the Relationship Between Improvement in Depressive Symptoms and Glycemic Control

Introduction: Depression is one of many comorbid conditions associated with diabetes. The rationale for this study is to examine the prevalence of depressive symptoms in adults with diabetes mellitus type II. Furthermore, the association between depressive symptoms and glycemic control will also be analyzed. Materials and methods: A chart review of 59 diabetes mellitus type II patients from a family practice clinic in San Juan, Texas was performed. These patients were screened for depressive symptoms using the Patient Health Questionnaire-9 (PHQ-9) during their annual physical exam. Since many of these patients have been treated in this clinic for many years for their multiple comorbidities, it is possible to evaluate their responses to the PHQ-9 over consecutive years and compare them with their glycemic control using a HbA1c level. Data was evaluated by using biological parameters, such as age and gender, and the clinical parameter of a HbA1c level. Inferential statistics, such as prevalence, frequency, correlation, and p-value, were also used in analyzing the data. Results: Depressive symptoms were analyzed using the PHQ-9. In 2016, 2017, and 2018, female diabetics were found to have a higher prevalence of depressive symptoms. When comparing diabetes and age, in 2016, those who were between the ages of 65 and 74 and 75 and older had a higher incidence of depressive symptoms. Furthermore, in 2017 and 2018, patients 75 and older also had a higher frequency of depressive symptoms. The controlled diabetic population was also found to have a greater rate of depressive symptoms. However, after careful analyzation, there was no significant relationship between glycemic control and depressive symptoms. Conclusion: Many diabetics have comorbid depressive symptoms. Even though this study showed no relationship between depressive symptoms and glycemic control, the treatment of depressive symptoms in diabetics may help to prevent the multiple life altering complications that diabetes can cause.