Received: September 2016, Accepted: December 2016 Background: The prevalence of diabetes mellitus (DM) is increasing, and thus, its mental consequences, such as depression, have an increasing trend. The goal of the present study was the determination of the prevalence of depression and some of its related factors in patients with type II DM who referred to the Diabetes Center of Rafsanjan, Iran, in the year 2016. Materials and Methods: For this purpose, 194 patients with DM under care in the Diabetes Clinic of Ranfanjan University of Medical Sciences, Iran, were selected via simple random sampling method and filled a demographic form and the Beck Depression Inventory (BDI). Data were analyzed using chi-squared test. Results: In this study, 67%, 24.7%, 6.2%, and 2.1% of the participants had no depression symptoms, mild depression, moderate depression, and severe depression. There was significant difference between the frequency of different depression severities based on age (P < 0.001), duration since disease diagnosis or treatment (P < 0.001), occupation (P = 0.011), education (P < 0.001), and type of treatment. Conclusions:The rate of depression in patients with DM is relatively high and women, people with lower level of education, and the elderly, and homemakers are at greater risk which signifies the necessity of psychological and psychiatric consultation.

Background: Recently, some studies have investigated type D personality as a critical factor in developing depression and reducing the quality of life. Objectives: This study aimed to compare depression and quality of life after coronary artery bypass graft surgery in patients with and without type D personalities. Methods: Sixty-nine participants who underwent coronary artery bypass grafting at Imam Khomeini hospital, Ahvaz, Iran, referred to the cardiac surgery clinic for their first visit (1 to 1.5 months after surgery) were included in the study. All participants completed the World Health Organization Quality of Life questionnaire, type D personality scale, and Beck’s Depression Inventory. Finally, depression and quality of life were compared in two groups with and without type D personalities using ANOVA and correlation tests. Results: The two groups were significantly different in depression and quality of life scores after coronary artery bypass graft surgery. Depression and quality of life impairment were higher in participants with type D personality. There was no significant relationship between depression and quality of life with age, gender, and occupation in participants with type D personality. Conclusion: Depression and quality of life were higher in patients with type D personality after coronary artery bypass graft surgery than patients without type D personality. Episodic screening of these patients can prevent future somatic and psychological problems.