• Subhadra Evans, Vesna Djilas, Laura C Seidman, Lonnie K Zeltzer, and TsaoJennie C IJCIUCLA Pediatric Pain and Palliative Care Program, David Geffen School of Medicine at University of California, Los Angeles, California..
• School of Psychology, Deakin University, Geelong, Australia. Electronic address: subhadra.evans@deakin.edu.au.
• J Pain. 2017 Sep 1; 18 (9): 108710951087-1095.

UnlabelledSleep problems have been identified as a potential antecedent of chronic pain and pain-related disability in pediatric populations. In adult studies, affect has been implicated in these relationships. This study sought to better understand the relationships between sleep quality, negative and positive affect, and pain and functioning in children with chronic pain. Participants included 213 children and adolescents (aged 7-17 years) presenting to a tertiary pain clinic with chronic pain. Children completed questionnaires measuring sleep quality, positive and negative affect, pain intensity, and functional disability. Results indicated that 74% of children reported disordered sleeping and that poor sleep quality was significantly associated with increased pain, disability, negative affect, and decreased positive affect. Our hypotheses were partially supported, with negative affect (but not positive affect) mediating the relationship between poor sleep and increased pain; and positive as well as negative affect mediating the relationship between poor sleep and increased functional disability. There was no evidence for affect as a moderator. This study adds to the growing literature demonstrating the effect of poor sleep quality on children's pain and functioning, highlighting the need to develop further longitudinal research to confirm the causal roles of these variables.PerspectiveThis article examines the relationship between poor sleep quality, affect (negative as well as positive), pain, and disability in children with chronic pain. The findings have the potential to better understand the processes involved in how poor sleep may lead to increased pain and pain-related disability.Copyright © 2017 American Pain Society. All rights reserved.

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