title: Translation, cultural adaptation, and validation of the Sleep Apnea Quality of Life Index (SAQLI) in Persian-speaking patients with obstructive sleep apnea.
abstract: OBJECTIVE
  The aim of this study was the translation, cross-cultural adaptation, and validation of the Sleep Apnea Quality of Life Index (SAQLI) in Persian-speaking patients with obstructive sleep apnea (OSA).
  
  
  METHODS
  Ninety-six patients with OSA completed a series of questionnaires including SAQLI, Epworth Sleepiness Scale (ESS),10-item Functional Outcomes of Sleep Questionnaire (FOSQ-10), and Medical Outcome Survey Short form 12 (SF-12) for assessment of reliability, validity, and responsiveness of Persian version of SAQLI.
  
  
  RESULTS
  The Persian version of SAQLI had a very good internal consistency and also demonstrated good test-retest reliability. Concurrent validity was confirmed by significant correlations with ESS, FOSQ-10 and SF-12 subscale scores. Comparison of SAQLI scores in groups of patients categorized by ESS showed the high discriminative power of this instrument. However, there was no significant difference in the SAQLI scores of patients with mild, moderate, and severe sleep apnea. The results of sensitivity to change verified that the SAQLI was able to detect changes after continuous positive airway pressure (CPAP) treatment.
  
  
  CONCLUSIONS
  The findings of this study indicate that the Persian version of SAQLI is a reliable, valid, and responsive measure for evaluation of quality of life in patients with OSA.
authors.affiliation: Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Sara
authors.initials: S
authors.lastname: Rahavi-Ezabadi
authors.affiliation: Occupational Sleep Research Center, Otorhinolaryngology Head and Neck Surgery Department, Imam Khomeini Educational Complex Hospital, Valiasr Hospital, Tehran University of Medical Sciences, Tehran, Iran. a_amali@sina.tums.ac.ir.
authors.forename: Amin
authors.initials: A
authors.lastname: Amali
authors.affiliation: Occupational Sleep Research Center, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Khosro
authors.initials: K
authors.lastname: Sadeghniiat-Haghighi
authors.affiliation: Health Metrics Research Center, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Montazeri
authors.affiliation: Epidemiology and Biostatistics Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Saharnaz
authors.initials: S
authors.lastname: Nedjat
mesh_terms: D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D003466:Cultural Characteristics; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000706:statistics & numerical data; D011788:Quality of Life / Q000523:psychology*; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000208:ethnology*; D011795:Surveys and Questionnaires; D014175:Translating
keywords: Persian version; Reliability; Sleep Apnea Quality of Life Index; Translation; Validity