Friends: So, after all that conversation I think we can crystallize the points this debate frazzled into:
- There is no "canonical CDM". There is only a CDM. I am with @Patrick_Ryan here. If you feel you need to deviate from the scripture please bring it on (like in this debate) and we will find a solution. Only data that is truly local and will never be studied across the network should be put into some kind of an add-on.
- We do have the need for capturing and studying dosing information that does not anticipate the administration of an entire unit or fixed amount of ingredient, like for example @docsteveharris' infusion rate. This debate is also happening in another Forum, and I am thinking we could solve it by introducing a new field giving us the required unit (µg/kg/min in this case). Please continue there.
- The domain assignment of concepts. Again, like @Patrick_Ryan said: We can debate this here and make it better, but we should ultimately have the vocabulary CONCEPT table be the common ground. "Feeling" in which Domain a concept should live is difficult to reproduce. @bailey's example is a typical case where it is hard to decide, Polyuria and Anuria was another one. We even managed to convince SNOMED to split up the concept into the Measurement and Condition, because having it ambiguously in one Domain screwed up their own hierarchy.
So: Please keep bringing it on, and we will make the CDM better.