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Clustering of patient instances allows finding out groups for which statistical models can be built more efficiently. However, the performance of such an approach depends on the features used as clustering attributes. In this paper, the methodology that consists of combining unsupervised feature selection and grouping to improve the performance of statistical analysis is considered. We assume that the set of attributes used in clustering and statistical analysis phases should be different and not correlated. Thus, the method consisting of selecting reversed correlated features as attributes of cluster analysis is considered. The proposed methodology has been verified by experiments done on three real datasets of cardiovascular cases. The obtained effects have been evaluated regarding the number of detected dependencies between parameters. Experiment results showed the advantage of the presented approach compared to other feature selection methods and without using clustering to support statistical inference.<\/jats:p>","DOI":"10.1155\/2018\/2520706","type":"journal-article","created":{"date-parts":[[2018,10,14]],"date-time":"2018-10-14T23:30:48Z","timestamp":1539559848000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Integrating Correlation\u2010Based Feature Selection and Clustering for Improved Cardiovascular Disease Diagnosis"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6124-1236","authenticated-orcid":false,"given":"Agnieszka","family":"Wosiak","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1546-4823","authenticated-orcid":false,"given":"Danuta","family":"Zakrzewska","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,10,14]]},"reference":[{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10916-011-9710-5"},{"key":"e_1_2_8_2_2","first-page":"218","article-title":"Data mining in clinical decision support systems for diagnosis","volume":"2","author":"Amin S. 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