Hi Tom, has anyone come across an example where "Unavailability of certain 
information" requires more than a single TEXT item to represent? I'm not 
talking about positive statements about exclusion of certain information - just 
"Unknown" cases.

Cheers,

-koray


-----Original Message-----
From: openEHR-clinical [mailto:[email protected]] On 
Behalf Of Thomas Beale
Sent: Monday, 15 July 2013 7:41 p.m.
To: For openEHR technical discussions; For openEHR technical discussions; For 
openEHR clinical discussions
Subject: Re: Recording absence of (clinical) information

> Hi everyone,
Hi koray,
how do you want to do this? We decided against absence / exclusion in th RM a 
long time ago, because it is not a simple negation in general, but a complex 
(i.e. archetyped) statement.

-thomas


>
> This is to do with my long standing issue about recording absence of
> info. In endoscopy
models the "Presence" of endoscopic findings was represented as a CLUSTER where 
a special ELEMENT (that is internally referenced many times for each finding 
thereafter) captured "Presence" of a finding and also  if/why information about 
a particular finding was not available.
This I thought was a quick and dirty fix to a larger problem which I reckon 
applies to all data structures and types including ENTRY Class itself.
>
> I came across this in NEHTA medication archetypes:
>
> COMPOSITION.Medication_List has "Absent Info slot filled by
> openEHR-EHR-
EVALUATION.absence.v1 (and specialisations) that has only one ELEMENT which 
captures absence (free or coded text)
>
> Description says: Positive statement that no information is available about 
> medication use.
>
> While this approach solves the current problem in the long term and in
> order to enable a global
scale interoperability it seems to be another quick & dirty fix. To me this is 
a crystal clear pattern for clinical information (and potentially 
administrative too) - shouldn't this be handled in RM?
>
> Sorry if this has already been dealt with - I haven't been able to read all 
> discussions for a while.
>
> Cheers,
>
> -koray
>
> Koray Atalag, MD, PhD, FACHI
>
> Senior Research Fellow
>
> Description: Description: Description:
> cid:image001.png at 01CD2460.A69C1680
>
> School of Population Health, The University of Auckland
>
> Private Bag 92019 Auckland 1142, New Zealand
>
> Email: k.atalag at nihi.auckland.ac.nz<mailto:k.atalag at 
> nihi.auckland.ac.nz> | Web:
www.nihi.auckland.ac.nz<http://www.nihi.auckland.ac.nz/>
>
> Skype: atalagk  Mob: 021 02412096  DDI: +64 9 923 7199



--
Thomas Beale
Chief Technology Officer Ocean Informatics



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