Inclusion Criteria:  Patients who were admitted to our clinic with the diagnosis of diabetes mellitus type 2 during the study  Exclusion Criteria:  Patients with a known sleep disorder, Language or psychiatric problems that prevented responding to the questionnaire Patients who underwent changes in their antidiabetic treatment during the first control examination Those who did not re-admit to the hospital for routine check-ups within 6 months after the first visit Patients who declared not to comply with the recommendations were excluded from the study