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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">clinvest</journal-id><journal-title-group><journal-title xml:lang="ru">Качественная клиническая практика</journal-title><trans-title-group xml:lang="en"><trans-title>Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2588-0519</issn><issn pub-type="epub">2618-8473</issn><publisher><publisher-name>ООО «Издательство ОКИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/2588-0519-2023-4-52-57</article-id><article-id custom-type="elpub" pub-id-type="custom">clinvest-688</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="ru"><subject>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL TRIALS</subject></subj-group></article-categories><title-group><article-title>Изменения параметра времени первого скрининга пациентов и его деривативов во время набора пациентов в клинических исследованиях II–III фаз</article-title><trans-title-group xml:lang="en"><trans-title>Changing the first screening parameters for patients and their derivatives in Phase II–III clinical studies</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9843-6096</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Милованов</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Milovanov</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Милованов Святослав Сергеевич, к. м. н., независимый GxP-аудитор, специалист по клиническим исследованиям</p><p>Москва</p></bio><bio xml:lang="en"><p>Svyatoslav S. Milovanov, Cand. Sci. (Med.), independent GxP-auditor, clinical research associate</p><p>Moscow</p></bio><email xlink:type="simple">milovanovss@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ИП Милованов Святослав Сергеевич</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Individual entrepreneur Milovanov Svyatoslav Sergeevich</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>28</day><month>02</month><year>2024</year></pub-date><volume>0</volume><issue>4</issue><fpage>52</fpage><lpage>57</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Милованов С.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Милованов С.С.</copyright-holder><copyright-holder xml:lang="en">Milovanov S.S.</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.clinvest.ru/jour/article/view/688">https://www.clinvest.ru/jour/article/view/688</self-uri><abstract><p>Актуальность. Поиск параметров клинических исследований (КИ), связанных с набором пациентов, объединён, прежде всего, с поиском параметров, способных предугадать набор — предикторов набора пациентов, так как набор пациентов является важным и одним из наиболее сложных процессов в клинических исследованиях от успешности которого зависит всё исследование. Автор предлагает использовать параметры предполагаемого исследовательского центра по набору пациентов, количество критериев исключения по протоколу, другие простейшие методы, позволяющие спрогнозировать предстоящий набор испытуемых, однако предложенные подходы оказываются невостребованными. Параметр успешности набора пациентов в предыдущих 10 и больше исследованиях предложенный автором очевидно имеет свои недостатки, так как автоматически исключаются исследовательские центры, не участвовавшие в 10 успешных исследованиях. Тем не менее поиск простого параметра, позволяющего предугадать предстоящий набор продолжается автором и, например, время первого скрининга, имеет свой потенциал предиктора. Были проанализированы изменения этого параметра и его деривативов во время набора пациентов в выбранные международные многоцентровые клинические исследования(ММКИ). Материалы и методы. Проведён ретроспективный анализ 4 ММКИ II–III фаз по набору пациентов и изменению параметров времени первого скрининга и его деривативов. Цель исследования. Рассмотреть изменения параметра времени первого скрининга и его деривативов во время набора пациентов. Статистический анализ. Описательная статистика с типированием. Результаты. Рассмотрено изменение параметра времени первого скрининга во время набора пациентов в КИ. Время первого скрининга изменяется в зависимости от принадлежности к разным типам исследовательских центров, опыта главного исследователя. Обсуждение. По данным литературы изменение параметра времени первого скрининга может говорить об успешности набора пациентов в исследовательском центре. Заключение. Изученные изменения времени набора скрининга позволят применять полученные значения при проведении клинических исследований.</p></abstract><trans-abstract xml:lang="en"><p>Actuality. The search for parameters of clinical trials (CT) associated with the recruitment of patients is primarily associated with the search for parameters that can predict the recruitment — predictors of patient recruitment, since patient recruitment is an important and one of the most complex processes in clinical trials, the success of which depends on the entire study. The authors propose to use the parameters of the recruitment of patients assumed by the center, the number of exclusion criteria according to the protocol, and other simple methods that allow predicting the upcoming recruitment; however, the proposed approaches are unclaimed. The parameter of success in enrolling patients in the previous 10 or more studies proposed by the authors obviously has its drawbacks because clinical centers that did not participate in 10 successful studies are automatically excluded. However, the search for a simple parameter to predict upcoming recruitment continues; for example, the time of the first screening has its own predictor potential. We investigated changes in this parameter and its derivatives during the recruitment of patients to selected international multicenter clinical trials (IMCTs). Materials and methods. A retrospective analysis of 4 IMCTs of II–III phases was performed on the recruitment of patients and changes in the time parameters of the first screening and its derivatives. Aim. Consider changes in the time parameter of the first screening and its derivatives during patient recruitment. Statistical analysis. Descriptive statistics with typing. Results. The change in the time parameter of the first screening during the recruitment of patients for CT was considered. The time of the first screening varies depending on the type of clinical center and the experience of the principal investigator. Discussion. According to the literature, a change in the time parameter of the first screening may indicate the success of the recruitment of patients in the center. Conclusion. The changes in the time of the screening set studied by us will allow us to apply the obtained values in clinical trials.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>время первого скрининга</kwd><kwd>типы исследовательских центров</kwd><kwd>нормальный набор пациентов</kwd><kwd>дериватив времени первого скрининга</kwd></kwd-group><kwd-group xml:lang="en"><kwd>first screening time</kwd><kwd>site types</kwd><kwd>normal patient set</kwd><kwd>first screening time derivative</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Hollis JF, Satterfield S, Smith F, et al. Recruitment for phase II of the Trials of Hypertension Prevention. Effective strategies and predictors of randomization. Trials of Hypertension Prevention (TOHP) Collaborative Research Group. 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