Mikko Virtanen Distributing data to different platforms using XML ************************************************** The ATBC Cancer prevention study is large and complex cohort study with long history. The path from the raw data to publications is described. Easiest way would be to standardize the used statistical package and provide methods to access the data for this package only. In practice the skill level of those doing the analyses vary and several packages must be supported. Extra care must be put on ensuring that the versions of the data are same. The XML offers structured way of combining the definition, documentation and the revision history of each data item. These definitions are then transformed using the XSLT to code, meta data (help files) and documentation (HTML and PDF). The current version defines the data structures in a rather restricted way, but the extension of the same idea to analysis results will be discussed briefly.