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CSCR-066 Make negationInd 0..1 optional throughout

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Submitted by: Rik Smithies Revision date: 19-Jun-2006
Submitted date: 19-Jun-2006 Change request ID: CSCR-066


NegationInd is present in ObservationRange and Criterion as [1..1] default "false". (Strangely these are neither required nor mandatory, so are 1..1 optional.) Most other negationInd attributes in the model are [0..1] optional, the exception being SourceOf2 and SourceOf1, where it is [0..1] required (it seems a little strange to have a boolean value as 'required').

Models that make use of code systems that include concepts similar to negationInd have no need for this attribute and should be able to refine it out totally. An alternative that has been used is for models that don't need negationInd to make it mandatory with fixed value "false", but this seems unnecessary and wasteful, although that would still be possible.


  • Make all negationInd attributes 0..1 Optional default "false". Specifically this means changing ObservationRange, Criterion, SourceOf2 and SourceOf1.


This means negationInd can be refined out completely in models that don't need them.


24 August 2006

Agreed to split the motion to deal with negationInd ObservationRange and Criterion seperatly from negationInd on act relationships.

Recommended Action Items


24 August 2006

Regarding NegationInd in ObservationRange and Criterion:

Motion passed.

Proposed Rik, seconded Patrick. Against: 0 Abstain: 0 For: Davera Gabriel, Patrick Loyd , Rik Smithies, Hans Buitendijk, Andrew Perry, Charlie Bishop

Regarding NegationInd in act relationships:

There was no consensus regarding the use of NegationInd as a required attribute where the sending or receiving system are not be able to support negation. Rik is to a message on the MnM list ?copy to patient care.