I have come across an interesting example of where we might want to model an ordinal constraint where the values associated with each term are not unique.
The example is the Waterlow Score http://www.judy-waterlow.co.uk/downloads/Waterlow%20Score%20Card-front.pdf If you look at the bottom-right corner "Major surgery / Trauma" you will se that two terms have identical values. Currently the openEHR Archetype Editor will not let me add duplicate values with separate terms. It is not clear (at least to me) from the specifications that this behaviour is correct. Is this a CR for the Archetype Editor, a CR to the Ref Model, or a clever alternative modelling suggestion to me? Regards, Ian Dr Ian McNicoll office +44 (0)1536 414 994 fax +44 (0)1536 516317 mobile +44 (0)775 209 7859 skype ianmcnicoll ian.mcnicoll at oceaninformatics.com Clinical Modelling Consultant,?Ocean Informatics, UK openEHR Clinical Knowledge Editor www.openehr.org/knowledge Honorary Senior Research Associate, CHIME, UCL BCS Primary Health Care ?www.phcsg.org

