title: Sleep Quality and Depression and Their Association with Other Factors in Hemodialysis Patients.
abstract: BACKGROUND
  Sleep disorders and depression, accompanied by reduced quality of life and increased mortality are the most common psychological problems in dialysis patients. This study was conducted with the aim to investigate depression and sleep quality and their association with some demographic and clinical factors in hemodialysis patients.
  
  
  METHODS
  This descriptive-correlative study was conducted on 310 patients undergoing hemodialysis in 8 centers in educational hospitals in Mazandaran University of Medical Sciences. Data collection tools included a demographic questionnaire, Beck Depression Inventory, and Pittsburg Sleep Quality Index (PSQI). Statistical analysis was conducted using Chi-Square test and regression model.
  
  
  RESULTS
  Results obtained showed 44.8% depression in patients. Significant relationships were found between depression and increased blood phosphorus (P=0.002) and urea (P=0.001). Poor sleep quality was observed in 73.5% of hemodialysis patients, which was found significantly related to aging (P=0.048), female (P=0.04), and reduced frequency of weekly hemodialysis (P=0.035).
  
  
  CONCLUSIONS
  Depression and poor sleep quality are two common factors in hemodialysis patients, but patients do not overtly show symptoms of these disorders.
authors.affiliation: Student of M.S Nursing, School of Nursing and Midwifery, Mazandaran University of Medical Science, Sari, Iran. vidashafipour@yahoo.com.
authors.forename: Masomeh Norozi
authors.initials: MN
authors.lastname: Firoz
authors.forename: Vida
authors.initials: V
authors.lastname: Shafipour
authors.forename: Hedayat
authors.initials: H
authors.lastname: Jafari
authors.forename: Seyed Hamzeh
authors.initials: SH
authors.lastname: Hosseini
authors.forename: Jamshid Yazdani
authors.initials: JY
authors.lastname: Charati