Measuring sleep health in primary school-aged children: A systematic review of instruments and their content validity.

"Disclosure Statement Financial disclosure: none. Non-financial disclosure: none."

"For this study the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guideline for systematic reviews of Patient-Reported Outcome Measures (PROMs), including methodology for assessing content validity, was used [, ]. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines were followed. This review was registered at PROSPERO, the international prospective register of systematic reviews (CRD42021224109). Conclusions: Several (subscales of) instruments measuring domains of child sleep health showed good promise, demonstrating sufficient relevance, comprehensibility, and some also sufficient results on other measurement properties. However, more high quality studies on instrument development and the evaluation of measurement properties are required.: PROSPERO registration number: CRD42021224109"