Development of a lifelong core outcome set for oesophageal atresia ± tracheoesophageal fistula: the OCELOT study

14 outcomes have been agreed on to form the COS. 12 of these outcomes are relevant to people of all ages, 1 to paediatric population and 1 to adult cohorts. The COS is, therefore, truly applicable lifelong, which was the scope of the project. This COS will help reduce research heterogeneity, enabling better quality research outcomes and more comparable data.