Registry-derived stage (RD-Stage) for capturing cancer stage at diagnosis for endometrial cancer

Capture of cancer stage at diagnosis is important yet poorly reported by health services to populationbased cancer registries. In this paper we describe current completeness of stage information for endometrial cancer available in Australian cancer registries; and develop and validate a set of rules to enable cancer registry medical coders to calculate stage using data available to them (registry-derived stage or‘RD-Stage’).