Multiple race records / multi-race declaration records not accommodated on OMOP

[DaveraGabriel]

Data from CDMs may include a "multirace" value or more than on race records per patient.

The OMB standard for collecting race records indicate "the total number of respondents reporting "more than one race" (regardless of ethnicity) shall be provided."

An extension to OMOP or additions to vocabulary for N3C is required. Until this is resolved, "OTH" indicating other value will populate multiracial records

[stephanieshong]

We will also need to check for non-cdm-conforming race value sets, what to do with them. SDoH group has mentioned that there is some data loss due to this.