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Original ArticleOpen Access
The Development of Sleep Questionnaires Thai Version (ESS, SA-SDQ, and PSQI): Linguistic Validation, Reliability Analysis and Cut-Off Level to Determine Sleep Related Problems in Thai Population
Methipisit T ,
Mungthin M ,
Saengwanitch S ,
Ruangkana P ,
Chinwarun Y ,
Ruangkanchanasetr P ,
Panichkul S ,
Ukritchon S ,
Mahakit P ,
Sithinamsuwan P 
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Methipisit T, Mungthin M, Saengwanitch S, Ruangkana P, Chinwarun Y, Ruangkanchanasetr P, Panichkul S, et al. The Development of Sleep Questionnaires Thai Version (ESS, SA-SDQ, and PSQI): Linguistic Validation, Reliability Analysis and Cut-Off Level to Determine Sleep Related Problems in Thai Population. J Med Assoc Thai 2016;99:893.
Background: The Epworth Sleepiness Scale (ESS), Sleep Apnea Scale of Sleep Disorders Questionnaire (SA-SDQ), and Pittsburgh Sleep Quality Index (PSQI) are widely used in English speaking countries for sleep problem screening. However, there is no officially validated Thai-version of sleep questionnaires available.
Objective: To provide standard Thai version of three sleep questionnaires and find cut-off level to screening sleep problems in Thai population.
Material and Method: We used Mapi Research Institute Methods for translation from original language to Thai questionnaire. Then, test-retest reliability analysis was performed. Finally, we collected data from patients who underwent polysomnography in Phramongkutklao Sleep Lab Centre between June and August 2011. Cut-off value to screen population at risk for sleep-related disorder was researched.
Results: The questionnaires were translated with very good inter-rater agreement. Cut-off of ESS, SA-SDQ, and PSQI suggested sleep disorders would be 9, 27, and 6.5 respectively.
Conclusion: Sleep disorder questionnaires including ESS, SA-SDQ, and PSQI were translated into Thai with high validity, reliability, and accuracy.
Keywords: ESS, SASDQ, PSQI, Thai-version, Polysomnography, OSA
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