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Update cdm60.Rmd 

Updated links to cdm v5.4
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Clair Blacketer 2021-09-23 09:12:58 -04:00
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@ -22,7 +22,7 @@ library(stringr)
## NOTE ABOUT CDM v6.0
Please be aware that v6.0 of the OMOP CDM is **not** fully supported by the OHDSI suite of tools and methods. The major difference in CDM v5.3 and CDM v6.0 involves switching the \*_datetime fields to mandatory rather than optional. This switch radically changes the assumptions related to exposure and outcome timing. Rather than move forward with v6.0, CDM v5.4 is actively in production to address additions to the model that have been requested by the community while retaining the date structure of medical events in v5.3. Please see our [roadmap](https://github.com/OHDSI/CommonDataModel/projects/3) for more information on which proposals will be included in CDM v5.4. For new collaborators to OHDSI, please transform your data to [CDM v5.3](https://github.com/OHDSI/CommonDataModel/releases/tag/v5.3.1) until such time that CDM v5.4 is ready for release.
Please be aware that v6.0 of the OMOP CDM is **not** fully supported by the OHDSI suite of tools and methods. The major difference in CDM v5.3 and CDM v6.0 involves switching the \*_datetime fields to mandatory rather than optional. This switch radically changes the assumptions related to exposure and outcome timing. Rather than move forward with v6.0, CDM v5.4 was designed with additions to the model that have been requested by the community while retaining the date structure of medical events in v5.3. Please see our the specifications for [CDM v5.4](http://ohdsi.github.io/CommonDataModel/cdm54.html) and detailed [changes from CDM v5.3](http://ohdsi.github.io/CommonDataModel/cdm54Changes.html). **For new collaborators to OHDSI, please transform your data to [CDM v5.4](https://github.com/OHDSI/CommonDataModel/releases/tag/v5.4) until such time that the v6 series of the CDM is ready for mainstream use.**
Below is the specification document for the OMOP Common Data Model, v6.0. Each table is represented with a high-level description and ETL conventions that should be followed. This is continued with a discussion of each field in each table, any conventions related to the field, and constraints that should be followed (like primary key, foreign key, etc). Should you have questions please feel free to visit the [forums](https://forums.ohdsi.org/) or the [github issue](https://github.com/ohdsi/CommonDataModel/issues) page.