Guidance to develop a multidisciplinary, international, pediatric registry: a systematic review.

AIM: The European Reference Network for craniofacial anomalies and ear, nose and throat disorders (ERN-CRANIO) aims to improve craniofacial care on a European scale. Within ERN-CRANIO, the cleft lip and palate (CL/P) work stream seeks to ameliorate health outcomes for patients with CL/P. This work stream acknowledged the need for a European wide registry for comparable outcome measures and therapy endpoints to achieve this goal. This review aimed to provide a scientific basis for the conceptualization of this registry by studying previous registry initiatives. METHODS: This review performed thematic analysis on twenty-four articles through narrative synthesis. An iterative process was used to identify key-themes required for prolonged registry success. RESULTS: Analysis of the literature resulted in twenty-one distinct headings including quantitative and qualitative data. Quantitative data including registry characteristics were visualized in a table. The analysis of qualitative data resulted in the identification of fourteen key-themes, which have been summarized and visualized in a guidance. CONCLUSION: This review has successfully identified key-themes required for the development of an international, multidisciplinary, pediatric registry for pan-European cleft care. The guidance provided by this review applies to the goals of ERN-CRANIO, but can be used by any initiative developing a registry.