On Fri, Mar 02, 2018 at 10:55:47AM +0000, Bakke, Silje Ljosland wrote: > I've hesitated to participate in this discussion, but I think I have a couple > of points to add now, as I think there are two different problems being > discussed here: > > 1. The original problem, which in my opinion is how and where to store > reference ranges for clinical observations such as for instance blood > pressure. These reference ranges are often based on clinical research, and > may change with time as new research emerges. In my opinion these shouldn't > be stored with the original observation data, but can (when needed) be stored > with any interpretation where the data is used to reach a conclusion, for > example a symptom, diagnosis or even just an instruction. The reference > ranges that are current at any point in time however, should be stored and > accessed from a knowledge base outside the EHR, as they don't relate to the > data of a specific patient. However, that knowledge base may well be linked > to specific archetypes and archetype elements to facilitate its usage, for > example to the systolic, diastolic and position elements of the blood > pressure archetype, if the reference ranges vary based on the position of the > patient at the time of measurement. > > 2. The problem of reference ranges that are intricately bound to > specific observations and their methods, such as lab results. These should > be, and are commonly, stored with the observations in the EHR because the > details of analytic method and other factors that affect them are far too > complex to include in the EHR data. The RM attributes "normal_range" and > "other_reference_ranges" (and "normal_status") of the Quantity data type are > well suited for these reference ranges.
That about wraps it up. Except that I was of the impression that the original question was more about 2) rather than 1). Karsten -- GPG key ID E4071346 @ eu.pool.sks-keyservers.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346 _______________________________________________ openEHR-technical mailing list openEHRfirstname.lastname@example.org http://lists.openehr.org/mailman/listinfo/openehr-technical_lists.openehr.org