Development of the Korean Version of the Sleep Apnea Quality of Life Index
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Objectives. Obstructive sleep apnea (OSA) is a disorder characterized by repetitive partial or complete occlusion of the up- per 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 signifi- cant correlations with SF-36 subscale scores. Conclusion. The results of this study demonstrate that the K-SAQLI may be applicable for clinical purposes.
Abstract
Objectives. Obstructive sleep apnea (OSA) is a disorder characterized by repetitive partial or complete occlusion of the up- per 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 signifi- cant correlations with SF-36 subscale scores. Conclusion. The results of this study demonstrate that the K-SAQLI may be applicable for clinical purposes.
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