Tag Archives: models

openEHR technical basics for HL7 and FHIR users

Posted on 10/04/2016 by wolandscat

Recent discussions on the FHIR chat forum with various HL7 people around the topic of how openEHR and other architectural frameworks (e.g. VA FHIM, CDISC) could work with FHIR led to a realisation that some people in HL7 at least … Continue reading →

Posted in Computing, FHIR, Health Informatics, openehr, standards | Tagged , , , , , , | 7 Comments

Why IT people can’t build information systems

Posted on 29/11/2015 by wolandscat

(on their own) Every so often I remember how we were taught to build information systems and software. One of the steps is called ‘requirements capture’. The IT people are supposed to go and interrogate domain experts, in a step called ‘use … Continue reading →

Posted in Computing, Health Informatics, openehr | Tagged , , , | 4 Comments

Semantic scalability – the core challenge in e-health?

Posted on 15/12/2014 by wolandscat

A few months ago I posted on what makes a standard or set of standards in e-health investible. The headline requirements I can summarise as follows: platform-based: the standards must work together in a single coherent technical ecosystem, based on … Continue reading →

Posted in Health Informatics, openehr, standards | Tagged , , , , , , , , | 10 Comments

A real world CIMI archetype analysis based on Intermountain CEMs

Posted on 12/07/2013 by wolandscat

I have been meaning to blog the recent CIMI meeting (already 10 days ago 😉 but have been buried in ‘work’. So in lieu of that, I’ll put up an analysis of a real use case from Intermountain Health that … Continue reading →

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CIMI: purpose-built or jury-rigged?

Posted on 14/11/2011 by wolandscat

In recent weeks, the Clinical Information Modelling Initiative (CIMI), led by Stan Huff, has followed its stated process and is nearing a voting process in which a shared health domain modelling formalism is chosen. Proponents of each of the candidate … Continue reading →

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DCM – Data Types and Reference Model considerations

Posted on 11/09/2011 by wolandscat

Following the DCM meeting convened by Dr Stan Huff (Intermountain Healthcare) in Washington in July, reported in an earlier blog post, there is a further meeting this week in San Diego, which will discuss the issues of ‘data types’ and … Continue reading →

Posted in Health Informatics, openehr | Tagged , , , , , , , , | 1 Comment

Information models, DCMs and Archetypes

Posted on 07/07/2011 by wolandscat

I will be attending a ‘Fresh Look’ meeting in Washington next week. The idea is to make some progress on the topic of  ‘detailed clinical models’ (DCMs). Some of the goals include setting up a repository of DCMs, establishing governance, … Continue reading →

Posted in Computing, Health Informatics, openehr | Tagged , , , , , | 7 Comments

DCMs – can they look good AND be computable?

Posted on 08/06/2011 by wolandscat

Let’s talk about mindmaps and archetypes. Mindmaps seem to be fuzzy and friendly – we need them because they are incredibly efficient at transmitting information to humans. Archetypes seem über-mathematical, but we need them to do proper model-based computing.

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The HL7 Null Flavor Debate – part 2

Posted on 18/05/2011 by wolandscat

Previous: HL7 null flavors part 1 Null flavors – Objection #3: ontological problems The following table shows the current HL7v3 null flavor values. A full version of the table appears in Grahame Grieve’s blog post.

Posted in Computing, Health Informatics, openehr | Tagged , , , , , , | 4 Comments

The HL7 Null Flavor Debate – part 1

Posted on 18/05/2011 by wolandscat

(With apologies to those who use international English and normally spell it as ‘flavour’; in this post, I will spell it properly in informal text, and in the US way when referring to the formal HL7 null flavour concept.) Grahame … Continue reading →

Posted in Computing, Health Informatics, openehr | Tagged , , , , , , , | 8 Comments