investigate psychometric properties of Epworth sleepiness scale of questionnaire in adolescents

Sleep is one of essential human needs which results in the spiritual and physical vitality of man through it. Sleepiness is feeling of need orintense interestfor falling asleep. Excessive sleepiness can have bad consequences for humans. During adolescence due to psychological and physical changes (physical maturity) and emotional maturity, create many sleeping problems in adolescents. Aim of this study was to investigate psychometric properties of Epworth sleepiness scale of questionnaire in adolescents. In this study, which was a descriptive - analytic form of normative analysis, with use from sampling method, 701 adolescents with average age of 16.52 years old with standard deviation of 2.06 years, they completed questionnaire of Epworth sleepiness scale, insomnia severity index, Pittsburgh sleep quality index, adolescent sleep health, and sleep general measurement. Also was used to measure reliability from Cronbach Alpha method and for measure retest reliability of 10% of participants at intervals of 4-6 weeks, was completed Epworth sleepiness scale of questionnaire. Also, concurrency validation, structural validation and factor structure to confirmatory factor analysis method and exploratory analysis and validity and reliability of Epworth sleepiness scale were tested divide to gender. Amount of Cronbach's alpha in this study was 0.78 and also, Spearman correlation result was 0.80 in re-test which showed reliability of good retest, that was significant correlation between indicators with Epworth sleepiness scale. And also results also show confirmation of the research model, and with strength, explains enough variance in each factor. Result is that Persian version of Epworth sleepiness scale can be as reliable and valid tool for assess sleepiness scale of Farsilanguage adolescents.