Background: the organisationo ft raumac arei ns candinavia has several similarities, including trauma registries, but so far there are limited amount of research on efficiency and outcome. data and results from trauma outcome studies like the us mtos are not fully applicable to the scandinavian trauma population.Aims: to reveal the feasibility of usingd ata from existing trauma registries of major hospitals in scandinavia, for aminimal common dataset, in ajoint, prospective scandinavian mtos.Material and Methods: We collected data points, data point definitions, andinclusion/ exclusion criteria, from the major trauma registries of the swedish trauma registry standard, three university hospitalsindenmark, one university hospital in Finland, and the norwegian national tr auma registry.t he collected material was compared to reveal common data points, inclusion criteria, and the compatibilityofdata point definitions.Results: the median number of data points was 147 (range 71-257; interquartile range =90-205). Most registries lacked precise data definition catalogues. Only 16 data points could be considered as common, of which just afew were core trauma data. Four data points had the same data category options but were not considered having the same data point definitions. The inclusion criteria were not uniform.Conclusions: tr auma registries in scandinavia have few common core data and data point definitions. There were data points for calculating the Tr auma and Injury Severity score (triss) but the inclusion criteriav aried too much to ensure av alid comparison.