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Статистическая оценка возможности эмболизации венозного тромба

Статистическая оценка возможности эмболизации венозного тромба

Abstract

Рассмотрена оценка риска эмболизации венозного тромба при флеботромбозе и выявлены факторы, приводящие к возникновению тромбоэмболии легочной артерии (ТЭЛА). В качестве материала для построения статистической модели использованы результаты общедоступных клинических исследований. С помощью метода доверительных интервалов Неймана выполнен поиск статистически значимых различий выборок пациентов с четырьмя различными диагнозами. Выявленные статистически значимые отличия были использованы в дальнейших исследованиях в качестве априорной информации при формировании профилей опасности наличия ТЭЛА. Дальнейшие исследования выполнялись с помощью дискриминантного анализа и позволили выявить комплекс факторов, обладающих максимальными дискриминирующими возможностями при определении ТЭЛА для разных категорий пациентов. Достоверность полученных результатов определялась путем решения выявленных систем линейных классификационных уравнений, с определением часто применяемых в медицинской статистике таких параметров, как чувствительность и специфичность, являющихся аналогами ошибок первого и второго рода.

In this paper, the risk assessment of venous thrombus embolization under phlebothrombosis and factors that lead to pulmonary embolism (PE) has been considered. The statistical model has been constructed using the results of non-specific clinical trials. The Neumann’s method of confidence intervals is utilized for selection of statistically significant differences among four data samples of patients with different diagnoses. Revealed statistically significant differences are used in further studies as a priori information for the development of PE risk profiles. Further studies are carried out using discriminant analysis. A complex of factors is revealed that has a maximum discriminating efficiency in PE determination for different categories of patients. The reliability of the results is evaluated by solving the identified systems of classification linear equations. Parameters commonly used in medical statistics, such as sensitivity and specificity, being the analogues of the first and second kind of errors are also evaluated.

Keywords

СТАТИСТИЧЕСКИЕ МЕТОДЫ АНАЛИЗА ДАННЫХ,STATISTICAL METHODS OF DATA ANALYSIS,МЕТОД ДОВЕРИТЕЛЬНЫХ ИНТЕРВАЛОВ,THE METHOD OF CONFIDENCE INTERVALS,ДИСКРИМИНАНТНЫЙ АНАЛИЗ,DISCRIMINANT ANALYSIS,ФЛЕБОТРОМБОЗ,ТРОМБОЭМБОЛИЯ ЛЕГОЧНОЙ АРТЕРИИ,PULMONARY EMBOLISM,PHLEBO-THROMBOSIS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold