EXPLORATORY DATA ANALYSIS FOR THE HEMATOLOGICAL FEATURES. PART II. APPLICATION
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Part II contains numerical and graphical exploratory analysis results and elements of their medical interpretation for the set of the hematological observations and hematological variables. On the basis of correlation matices, matrix of scatterplots with overlaid regression lines and two and three-dimensional biplots relationships between parameters of blood during hemoperfusion is examined. For comparison purposes also MDS and one-way and two-way cluster analysis are performed. Usefulness of applied methods of multivariate data ordination to inspect, e.g. variables' interdependencies was assessed. Applied methods gave very close results and the medical interpretation of the results confirm some physiological clotting ideas. The practical results confirm some hypothesis describing polymer-blood interactions. Additionally, the results of principal factor analysis and multidimensional metric scaling with cluster analysis are concordant. The variety of applied exploration data methods confirm results and give the possibility of looking at data from different point of views.
- Malgorzata Cwiklinska-Jurkowska, Department of Theoretical Backgrounds of Biomedical Science and Medical Informatics, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Poland
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