The Core Outcome DEvelopment for Carrier Screening (CODECS) study: protocol for development of a core outcome set.

This protocol outlines the core outcome set development process and its novel application in the setting of genetic testing. This core outcome set will support the standardisation of outcome reporting in reproductive carrier screening research and contribute to an evolving literature on outcomes to evaluate genetic testing and genetic counselling as health interventions. COMET CORE OUTCOME SET REGISTRATION: http://www.comet-initiative.org/Studies/Details/1381 .