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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">rpcardio</journal-id><journal-title-group><journal-title xml:lang="en">Rational Pharmacotherapy in Cardiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Рациональная Фармакотерапия в Кардиологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1819-6446</issn><issn pub-type="epub">2225-3653</issn><publisher><publisher-name>«SILICEA-POLIGRAF» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20996/1819-6446-2024-3029</article-id><article-id custom-type="edn" pub-id-type="custom">QOHDFE</article-id><article-id custom-type="elpub" pub-id-type="custom">rpcardio-3029</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL STUDIES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group></article-categories><title-group><article-title>Comparison of the quality of logistic regression models and a classification tree in predicting hospital mortality in elderly patients with non-ST-elevation myocardial infarction</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнение качества моделей логистической регрессии и дерева классификации при прогнозировании госпитальной летальности у пациентов старческого возраста с острым инфарктом миокарда без подъема сегмента ST электрокардиограммы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6141-8994</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Переверзева</surname><given-names>К. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Pereverzeva</surname><given-names>K. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Переверзева Кристина Геннадьевна.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Kristina G. Pereverzeva.</p><p>Ryazan</p></bio><email xlink:type="simple">pereverzevakg@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1394-3791</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якушин</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakushin</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Якушин Сергей Степанович.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Sergey S. Yakushin.</p><p>Ryazan</p></bio><email xlink:type="simple">ssyakushin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6177-1405</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перегудова</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Peregudova</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Перегудова Наталья Николаевна.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Natalia N. Peregudova.</p><p>Ryazan</p></bio><email xlink:type="simple">docperegudova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-1168-1556</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мишутина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mishutina</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мишутина Мария Владимировна.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Mariia V. Mishutina.</p><p>Ryazan</p></bio><email xlink:type="simple">mishutina_01@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Рязанский государственный медицинский университет им. акад. И.П. Павлова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov Ryazan State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2024</year></pub-date><volume>20</volume><issue>4</issue><fpage>418</fpage><lpage>425</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Pereverzeva K.G., Yakushin S.S., Peregudova N.N., Mishutina M.V., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Переверзева К.Г., Якушин С.С., Перегудова Н.Н., Мишутина М.В.</copyright-holder><copyright-holder xml:lang="en">Pereverzeva K.G., Yakushin S.S., Peregudova N.N., Mishutina M.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.rpcardio.online/jour/article/view/3029">https://www.rpcardio.online/jour/article/view/3029</self-uri><abstract><sec><title>Aim</title><p>Aim. Using the CHAID (Chi Squared Automatic Interaction Detection) method to develop a classification tree for predicting hospital mortality in patients with non-ST-elevation myocardial infarction (non-STEMI) aged 75 years and older and compare the quality of the constructed model with the logistic regression model.</p></sec><sec><title>Material and methods</title><p>Material and methods. A retrospective analysis of the case histories of 119 sequentially enrolled patients aged ≥75 years who were hospitalized in a cardiology department due to non-STEMI in 2020-2021 was carried out. The construction of a predictive model of probability of dying was carried out using the logistic regression method. To assess the impact of various predictors affecting the probability of dying during the of hospitalization period in patients with non-STEMI, a classification tree was developed using the CHAID method. To compare the quality of logistic regression models and the classification tree, the areas under the ROC curve and confidence intervals were estimated.</p></sec><sec><title>Results</title><p>Results. Based on the construction of a binary logistic regression, it was found that the factors increasing hospital mortality were cardiogenic shock (CS): odds ratio (OR) 47.55; 4.00-589.16; p=0.002; new-onset atrial fibrillation: OR 6.45; 1.39-30.42; p=0.018; and the number of points on the GRACE scale: for each increase by 1 point: OR 1.03; 1,00-1,05; p=0.046. Similar data were obtained when analyzing the classification tree: in patients with CS, the predicted mortality was 91.7%. The probability of an unfavorable outcome based on the constructed classification tree was higher than the average in the analyzed sample in persons without CS, 2-3 degree atrioventricular blocks, and pulmonary edema, but with right bundle branch block on the electrocardiogram (25.0%) and in persons without CS and atrioventricular blockages of 2-3 degrees, but with pulmonary edema and a Q wave on the electrocardiogram (50.0%). Both methods of predicting hospital mortality are applicable. There were no statistically significant differences in the quality of both constructed models; the difference in the areas under the ROC curves was 0.043±0.268 with a 95% confidence interval of -0.055-0.141, p=0.387.</p></sec><sec><title>Conclusion</title><p>Conclusion. Both developed methods can be used to determine the probability of dying in a hospital. Currently, the recruitment of patients into a prospective study of a similar design has begun and is continuing, during which validation of the constructed forecasting models is planned.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цель</title><p>Цель. С помощью метода CHAID (Chi Squared Automatic Interaction Detection) разработать дерево классификации для прогнозирования госпитальной летальности у больных c инфарктом миокарда без подъема сегмента ST электрокардиограммы (ИМбпST) в возрасте 75 лет и старше и сравнить качество построенной модели с моделью логистической регрессии.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Проведен ретроспективный анализ данных историй болезни 119 последовательно включенных пациентов в возрасте ≥75 лет, госпитализированных в кардиологический стационар в связи с ИМбпST в 2020-2021 гг. Построение прогностической модели вероятности летального исхода выполнялось при помощи метода логистической регрессии. Для оценки влияния различных предикторов, влияющих на вероятность летального исхода за период госпитализации у пациентов с ИМбпST, было разработано дерево классификации методом CHAID. Для проведения сравнения качества моделей логистической регрессии и дерева классификации оценивались площади под ROC-кривой и доверительные интервалы (ДИ).</p></sec><sec><title>Результаты</title><p>Результаты. При построении бинарной логистической регрессии было установлено, что факторами, увеличивающими госпитальную летальность, служили кардиогенный шок (КШ) — отношение шансов (ОШ) 47,55; 4,00-589,16; p=0,002, впервые возникший пароксизм фибрилляции предсердий — ОШ 6,45; 1,39-30,42; p=0,018, число баллов по шкале GRACE — на каждое повышение на 1 балл — ОШ 1,03; 1,00-1,05; p=0,046. Похожие данные были получены и при анализе дерева классификации: у пациентов с КШ прогнозируемая летальность составляла 91,7%. Вероятность неблагоприятного исхода на основании построенного дерева классификации была выше, чем в среднем в анализируемой выборке у лиц без КШ, атриовентрикулярной блокады 2-3 степени, отека легких, но с блокадой правой ножки пучка Гиса на электрокардиограмме (25,0%) и у лиц без КШ и атриовентрикулярной блокады 2-3 степени, но с отеком легких и зубцом Q на электрокардиограмме (50,0%). Оба метода прогнозирования госпитальной летальности применимы у больных с ИМбпST. Статистически значимых различий в качестве обеих построенных моделей не получено — разность площадей под ROC-кривыми составила 0,043±0,268 с 95% ДИ -0,055-0,141, p=0,387.</p></sec><sec><title>Заключение</title><p>Заключение. Обе разработанные модели могут быть применимы для определения вероятности смерти в стационаре у пациентов с ИМбпST. В настоящее время начат и продолжается набор пациентов в проспективное исследование аналогичного дизайна, в ходе которого запланирована валидация построенных моделей прогнозирования.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>инфаркт миокарда без подъема сегмента ST</kwd><kwd>старческий возраст</kwd><kwd>75 лет и старше</kwd><kwd>кардиогенный шок</kwd><kwd>фибрилляция предсердий</kwd><kwd>атриовентрикулярные блокады 2-3 степени</kwd><kwd>блокада правой ножки пучка Гиса</kwd><kwd>отек легких</kwd><kwd>госпитальная летальность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>non-ST-elevation myocardial infarction</kwd><kwd>senile age</kwd><kwd>75 years and older</kwd><kwd>cardiogenic shock</kwd><kwd>atrial fibrillation</kwd><kwd>2-3 degree atrioventricular block</kwd><kwd>right bundle branch block</kwd><kwd>pulmonary edema</kwd><kwd>hospital mortality</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Рязанского государственного медицинского университета им. акад. И.П. Павлова.</funding-statement><funding-statement xml:lang="en">The study was performed with the support of I.P. Pavlov Ryazan State Medical University.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Российское кардиологическое общество. Острый инфаркт миокарда с подъемом сегмента ST электрокардиограммы. Клинические рекомендации 2020. Российский Кардиологический Журнал. 2020;25(11):4103. DOI:10.15829/29/1560-4071-2020-4103.</mixed-citation><mixed-citation xml:lang="en">Russian Society of Cardiology. 2020 Clinical practice guidelines for Acute ST-segment elevation myocardial infarction. Russian Journal of Cardiology. 2020;25(11):4103 (In Russ.) DOI:10.15829/29/1560-4071-2020-4103.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Барбараш О. Л., Дупляков Д. 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