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MEDILIG - RE: Health Information and Integration Platform ontology


Hi all,
I have been following discussions on your lists for a year now and I 
have
been triggered from the post of Evelyn about Health Information and
Integration Platform ontology to send my comments on ER health modeling.

My quest for ER models in the health domain started a year ago when I
decided to migrate a neurosurgery clinical database that I have 
developed as
a legacy EMR system and use international health standards for coding 
the
data. 
http://athanassios.gr/neurohealis.htm

I thought it would be easy to find a suitable schema from health 
standards
organizations and open EHR/EMR software to migrate my data but this is
exactly the point where I realized that schemas I studied where either 
too
complicate to read and implement or very limited. Perhaps this is why 
there
are hardly any implemented open RDBMS based on well defined extensive ER
health model. This observation gave birth to MEDILIG project.
http://sourceforge.net/projects/medilig/

MEDILIG is currently a personal effort to implement a simple but 
extensive
ER model that can be implemented easily with popular databases such as 
MSQL
server, MySQL, Oracle and build EHR or other clinical systems on top of 
it.
I have been studying openEHR archetypes and NHS data model to use 
values for
lookup tables I have in MEDILIG schema. What I find most intuitive with
openEHR is the idea for modeling archetypes and templates. But one can 
be
easily lost with the data details and structure, hence the need for
navigation through the model.

Although there are several health standards around for coding I do not 
think
there has been any agreement on what is going to be the standard ER 
model to
use and I believe that this might be a key reason why professionals from
both clinical and IT sector find difficulties in communicating 
effectively.
You need to refer to an ontology map such as those used at NCBO.
http://bioportal.bioontology.org/

To support further my arguments I attach for your convenience ER models 
for
HL7, NHS, openEHR and MEDILIG. 
http://cid-abb3ba8f2878f50f.office.live.com/self.aspx/.Public/ER%20Models.zi
p
(please let me know if you have problems with the link)

Perhaps one can start an open discussion at a blog for a COMPARISON of 
them.
If you study MEDILIG ontology you will notice that there are very few 
core
entities and most of the other entities are used like attributes with 
values
taken from international health coding standards. I think that this is a
useful distinction for future ER models. In case you are aware of
publications on that topic or discussions, please do advise me 
accordingly. 

Hope to have your feedback/comments for my point of view

My best wishes to all


Athanassios I. Hatzis, PhD

http://healis.gr

http://athanassios.gr



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