Journal of Research in Medical Sciences1735-19952838202402241149811498EN20240205<p><strong>Background:</strong> Sleep as a biological phenomenon is effective in the performance and recovery of athletes. Questionnaires can be used as a cost?effective initial assessment tool for sleep. The Athlete Sleep Screening Questionnaire (ASSQ) demonstrated a clinically valid instrument for screening relevant sleep issues in athletic populations. Due to the lack of validated tools for adequate screening<br />for sleep difficulties in the Iranian athlete population, the present study was conducted to evaluate the validity and reliability of the Persian version of the ASSQ.</p><p><strong> Materials and Methods:</strong> The translation process was performed using instructions by Beaton et al. Content validity was assessed by a panel of experts. Exploratory and confirmatory factor analysis was performed for two 5?item sleep difficulty scores (SDS) and a 4?item chronotype score. Internal consistency based on Cronbach’s alpha and McDonald’s omega and stability reliability were used to evaluate reliability.</p><p><strong> Results:</strong> The ASSQ achieved conceptual and semantic equivalence with the original scale. The item?level content validity index (I?CVI) of each item ranged from 0.87 to 1, and the averaging scale?level CVI/average was 0.95. In factor analysis, one factor for SDS and one factor for chronotype score were identified and confirmed. The internal consistency of the SDS scale (? =0.77, ? =0.83) and chronotype (? =0.74, ? =0.77) was acceptable. Stability reliability was confirmed for SDS scale (intra?class correlation [ICC] =0.87) and for chronotype (ICC = 0.83).</p><p><strong>Conclusion:</strong> Persian ASSQ has acceptable psychometric measurement properties as a screening tool to assess sleep in Iranian athletes.<br /><br /></p>http://jrms.mui.ac.ir/index.php/jrms/article/view/11498http://jrms.mui.ac.ir/index.php/jrms/article/download/11498/6305