title: Development of the korean version of the sleep apnea quality of life index.
abstract: OBJECTIVE
  Obstructive sleep apnea (OSA) is a disorder characterized by repetitive partial or complete occlusion of the upper airway during sleep that affects quality of life. The aim of this study was to develop the Korean version of the sleep apnea quality of life index (K-SAQLI) and apply it in Korean patients with OSA.
  
  
  METHODS
  Ninety-three patients with OSA completed the K-SAQLI. Its construct validity and responsiveness were tested by comparing the baseline and change scores obtained in each domain (i.e., daily functioning, social interactions, emotional functioning, and symptoms) using the medical outcome survey-short form 36 (SF-36).
  
  
  RESULTS
  The Cronbach α coefficients of internal reliability exceeded 0.60 in all the domains (daily functioning, 0.89; social interactions, 0.88; emotional functioning, 0.92; symptoms, 0.67; and total, 0.94). The K-SAQLI had a high test-retest correlation coefficient of 0.73 in the 20 randomized selected patients. The construct validity was confirmed by significant correlations with SF-36 subscale scores.
  
  
  CONCLUSIONS
  The results of this study demonstrate that the K-SAQLI may be applicable for clinical purposes.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Hyun-Uk
authors.initials: HU
authors.lastname: Jang
authors.affiliation: Department of Preventive Medicine, Gyeongsang National University School of Medicine, Jinju, Korea.
authors.forename: Ki-Soo
authors.initials: KS
authors.lastname: Park
authors.affiliation: Department of Neurology, Dong-A University College of Medicine, Busan, Korea.
authors.forename: Sang-Myung
authors.initials: SM
authors.lastname: Cheon
authors.affiliation: Department of Neurology, Brain Science and Engineering Institute, Kyungpook National School of Medicine, Daegu, Korea.
authors.forename: Ho-Won
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Sung-Wan
authors.initials: SW
authors.lastname: Kim
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea.
authors.forename: Seung-Hoon
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Jung-Soo
authors.initials: JS
authors.lastname: Kim
keywords: Calgary sleep apnea quality of life index; Medical outcome survey-short form 36; Obstructive sleep apnea; Quality of life; Questionnaires