===== Changes from CDM Version 4 =====
**THIS IS OUTDATED. All documentation is now on the [[https://github.com/OHDSI/CommonDataModel/wiki|github wiki]]. Please refer there or to the [[projects:workgroups:cdm-wg|CDM working group]] for more information**

The changes can be summarized into the following categories: 
  * New tables and fields
  * Changes to existing tables and fields
  * Changes in the conventions of the content of tables and fields
  * Changes to the vocabulary

=== New tables and fields ===

A number of new tables where introduced to reflect the additional information that will be stored in the CDM.