Abstract
            Introduction: Sleep deprivation is one of the common features of type 2 diabetes and a risk factor  for impaired self-care behavior in diabetics. This study aimed to investigate the relationship  between sleep quality and self-care behavior in people with type 2 diabetes in the city of Delijan  in 2022.  
  Methods: This was a descriptive-analytical study conducted on 207 people with type 2 diabetes.  The data were conveniently collected from health centers and homes in Delijan. Data collection  tools included the Pittsburgh Sleep Quality Index (PSQI), the Summary of Diabetes Self-Care  Activities Measure (SDSCA), clinical information about the disease (FBS, HbA1C levels, and  duration of diabetes), and a checklist of demographic information. SPSS version 23 was used for  data analysis. Data were analyzed using independent t-tests, ANOVA, and linear regression. The  P value<0.05 was considered significant.  
  Results: The mean age (SD) of the participants was 58.67 (10.4) years. Most participants were  female (66.7%). Among the demographic variables, family history of diabetes, chronic disease,  and duration of disease with self-care behavior, gender and age showed a significant association  with sleep quality. They also showed a significant correlation with sleep quality for the self-care  components of smoking, foot care, and physical activity.  
  Conclusion: Based on the results, healthcare providers can be recommended to encourage type  2 diabetes for more physical activity, do not smoke, and careful foot care to improve sleep  quality.