title: Determination of n-dimensional reference ellipsoids using patient data.
abstract: A method is described for the calculation of n-dimensional reference ellipsoids, using patient data. The advantages and drawbacks of the use of reference ellipsoids for a set of different parameters, in contrast with the use of a reference range for every single parameter, are discussed. The use of reference ellipsoids in practice is illustrated with an example.
mesh_terms: D000418:Albumins / Q000032:analysis*; D003201:Computers; D006801:Humans; D011506:Proteins / Q000032:analysis*; D012016:Reference Values; D013223:Statistics as Topic / Q000379:methods*
chemical_list: D000418:Albumins; D011506:Proteins