Grahame Grieve wrote:
> This question is regarding Section 3.1 in the Support Package. > I am using v0.9 We should note that this is the draft document on the draft page http://www.deepthought.com.au/health/openEHR/openEHR.html > The terminology definitions feel a little incomplete. > The lists of strings given are reasonable, but the > way the namespaces(?) are used seems a little slippery, I agree. E.g. "ISO:639-1:1998" - I have not found a standardised way to refer to "639-1" (ISO's own id for this standard) which includes both the string "ISO" (so we know where it's from) and some version number or year, whcih is commonly used to refer to versions in standards. In the terminology id section (same spec) you will see that terminologies are referred to using the syntax name "(" version ")" e.g. "SNOMED-CT(2003)" At the moment there appears to be no normative specification for this either. THe HL7 list of terminology ids is missing numerous ones, and also does not include versions - well, some yes, like major release of ICD, and some no (version is included in the CD types - however, this is useless when just needing to identify a terminology, since version can change a lot of things). In any case, we should adjust the constant definitions to conform to the terminology id syntax... > and there is no consistency with regard to versioning > in the list. Am I looking for too much from these > definitions? well, the problem is that there is no consistency to identifying versions of terminologies out there in the real world. Some people call ICD9 and ICD10 different terminologies, some just different versions (even though there have been interior releases of each); what is ICD10CM? How are versions of SNOMED-CT identified? As far as we know, there is no current standard for this, even though there are obsolete CEN and ISO standards. I believe the real reason is that producers of terminologies do not obey well-known rules for change management, at least not the same rules! > I would propose UCUM for Terminology_id_Units_of_measure_properties. UCUM is used for atomic properties in the Data Types specification i.e. the names of the properties measured by all the atomic units. But it does not include the property names of compound units, e..g "acceleration" is the property measured by the unit "m.s^-2". - thomas - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
