hi Leo I have forwarded this question onto the UCUM wizard (Gunther Schadow). It's a pretty good question. Simply allowing the decimal would make the syntax ambiguous, but there's no easy way to do it any other way.
Grahame On Thu, Apr 28, 2011 at 6:47 PM, Moretti Leonardo <lmoretti at noemalife.com> wrote: > In cardiology, left ventricular mass (LVM) is often indexed to better > identify left ventricular hypertrophy. > Possible indexations are: > - LVM/BSA (body surface area) > - LVM/height > - LVM/height^2.7 > The first and the latter are often used. > The units of measurement of the latter is usually g/m2.7 > [gram/(meter^2.7)]. > > In DV_QUANTITY, "units" attribute should be expressed in UCUM unit syntax. > UCUM doesn't allow not integer exponent (see > http://aurora.regenstrief.org/~ucum/ucum.html#section-Syntax-Rules), so I > have the problem that I cannot express the units as g/m2.7. > > Any suggestion to solve this problem!? > Best regards > leo > _______________________________________________ > openEHR-technical mailing list > openEHR-technical at openehr.org > http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-technical > > -- ----- http://www.healthintersections.com.au / grahame at healthintersections.com.au / +61 411 867 065