Abstract
Abstract Introduction The use of core outcome sets (COS) and common data elements (CDEs) minimises research wastage by increasing the cross-comparison and meta-analysis of study findings. Our study sought to identify the clinical neuroscience subspecialties that have developed COS and CDEs, the countries of origin of authors, and the process through which COS and CDEs were developed. Method A search between 2000-2020 of the top 40 Impact Factor neurosurgical and neurological journals was conducted. A scoping review was performed in accordance with the PRISMA-ScR Checklist. Results Our search returned 169 papers, of which 35 were eligible for inclusion. The USA published the majority of papers (20/35). The papers mostly related to neurosurgery (30/35), with the most common neurosurgical sub-specialty being traumatic brain injury (14/35). There is an increasing publication trend over time, with 12 papers published in 2019. Five papers were systematic reviews conducting with the intention of COS/CDE development. 27 papers reported CDE development and 2 papers reported COS development. The COS development papers utilised international consensus meetings and adhered to international development statements. Conclusions COS and CDEs are increasingly being developed within clinical neurosciences. There is a need for greater international collaboration with regards to COS and CDEs development.
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