title: Analysis of clinical laboratory data by biplot methods using a three-dimensional display: discrimination of renal stone-patients with idiopathic hypercalciuria and primary hyperparathyroidism.
abstract: The biplot technique is a very useful graphical method to display the relationships between row and column characteristics in two-way tables. This method is applicable as long as the rank-2 approximation explains a large part (e.g. 95%) of the whole variability. However, since in large tables only a rank-3 approximation will yield such a high degree of explanation, a three-dimensional biplot technique has been introduced, using a 3d-screen as a matter of presentation of clinical laboratory data. The value of such a procedure is illustrated using as a clinical example a patient population with recurrent renal stone formation due either to primary hyperparathyroidism or to idiopathic hypercalciuria.
mesh_terms: D000328:Adult; D002118:Calcium / Q000652:urine*; D003626:Data Display; D003936:Diagnosis, Computer-Assisted; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications* / Q000378:metabolism; D007669:Kidney Calculi / Q000175:diagnosis* / Q000209:etiology / Q000378:metabolism; D008297:Male; D008875:Middle Aged
chemical_list: D002118:Calcium