When do i use null flavours and when the archetype absence?

[ian.mcnicoll]

Also this …

Uncertain, unknown and no information

Clinical data is hard to get right. One problem is to handle the unknown and/or uncertain semantic. I assume you all have met the challenge to model a value list of yes no uncertain unknown not applicable Norway is currently implementing a screening program for colorectal cancer. There will be #fhir messages with the data and extensively use of #snomed-ct. DIPS is developing #openehr models (templates and archetypes) to be used within our systems. We need to map these value sets into openehr …

I don’t much like what we are doing but I suspect the alternatives are worse!!