Significant health disparities exist between ethnic minorities in the UK, including infant mortality and childhood obesity rates. As such, representation of minoritised populations in research is crucial to ensure representative evidence-based medicine.1 Reporting of race and ethnicity in published US paediatric clinical trials was suboptimal, even in highest impact journals, despite the US National Institutes of Health (NIH) mandating reporting in the studies it funds.2 3 We aimed to assess ethnicity reporting in paediatric randomised controlled trials (RCTs) within the UK.

RCTs that only included paediatric patients recruited within the UK published prepandemic in 2019, chosen due to the huge impact of COVID-19 on published research in the subsequent years,4 were identified. Manuscripts were assessed for availability of and the proportion of ethnicities included (detailed in online supplemental material).

[archdischild-2023-326463supp001.pdf]

We identified 140 manuscripts meeting the inclusion criteria (online supplemental figure 1). Ethnicity data were reported in the main manuscript in 32.9% …