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Where are the OMOP CDM Specifications?

(Roger Carlson) #1

I can’t find the specifications for the OMOP CDM. The link I have:

now forwards here:


If you click the CDM GitHub link, the specifications are nowhere to be found. And the link to the specification goes back to the redirect page.

(Melanie Philofsky) #2

They are located there and they are beautiful!!! Click on the Conventions or CDM Version button at top.

Excellent work by @clairblacketer and all of the CDM WG.

(Tim Quinn) #3

@roger.carlson, The URL that you posted to the OMOP CDM GitHub site defaults to the Wiki tab, a.k.a. the “data dictionary”. If you’re looking for the Data Definition Language (DDL) files, you need to navigate to the Code tab: https://github.com/OHDSI/CommonDataModel

@MPhilofsky is correct that the Data Dictionary has moved to https://ohdsi.github.io/CommonDataModel/ but, unfortunately, it is not immediately apparent to the uninitiated that you need to select “CDM v5.3.1” or “CDM v6.0” from the “CDM Versions” menu at the top of the page before you see what you would expect.