Epidemiology of chronic pain in children and adolescents: a protocol for a systematic review update

INTRODUCTION: Chronic pain, defined as persistent or recurring pain or pain lasting longer than 3 months, is a common childhood problem and can profoundly impact children's physical, psychological and social functioning. The last comprehensive systematic review estimating the prevalence of chronic pain in children and adolescents was published in 2011. Since then, the literature on paediatric chronic pain has grown substantially. This manuscript outlines a protocol for an updated systematic review to provide updated estimates of the prevalence of various forms of chronic pain in children and adolescence. The review will also examine the relationship between sociodemographic and psychosocial factors related to chronic pain prevalence. METHODS AND ANALYSIS: (2012). A narrative synthesis will summarise the prevalence estimates of paediatric chronic pain and associated sociodemographic and psychosocial correlates. Meta-analyses and meta-regressions will be performed if the data permit. ETHICS AND DISSEMINATION: Ethical approval is not required. Findings will be disseminated through publication in an academic journal, presentations at conferences and in various media. PROSPERO REGISTRATION NUMBER: CRD42020198690.