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In the Chilean pediatric population, to date, there is no validated screening instrument for sleep-related breathing disorders (SRBD)., Objective: to develop and validate a cross-cultural adaptation of the Pediatric Sleep Questionnaire - sleep-related breathing disorder scale (PSQ-SRBD), by creating the Chilean Spanish version (PSQ-CL)., Patients and Method: The PSQ-SRBD was translated from English into Chilean Spanish, obtaining the PSQ-CL, which was subsequently validated. Internal consistency was determined through Cronbach's alpha coefficient in 26 children with obstructive sleep apnea confirmed by polysomnography and in 112 controls. Reliability was obtained through the test-retest method., Results: In the pilot group, the overall internal consistency of the PSQ- CL through Cronbach's alpha was 0.71 and the internal consistency was 0.653, 0.566, and 0.808 in subscales A, B, and C, respectively. The discrimination capacity of the PSQ-CL questionnaire established through ROC analysis was 81%, determining a cut-off score of 0.227 with a sensitivity of 73.08% and a specificity of 77.68%., Conclusions: The PSQ-CL is a suitable instrument for screening sleep-disordered breathing in Chilean children. This instrument may be useful in clinical practice and epidemiological research in the Chilean pediatric population and could be used for multicenter studies.