I am trying to map our source data to CDM form. However, we have few units like (‘g/day’,‘mg/day’,‘cells/uL’) which doesn’t have a matching standard concept in Athena.
However I am able to find the matching non standard concepts for these 3 units ( 4124449, 4120731,4117642)
I believe we aren’t supposed to map it to a non-standard term.
So, the only way is to convert it to some other valid standard unit and avoid using non-standard concepts?
When a concept becomes standard and non-standard? What is required to convert a concept from non-standard to standard?