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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Obstetrics and Gynecology</journal-id><journal-title-group><journal-title xml:lang="en">Obstetrics and Gynecology</journal-title><trans-title-group xml:lang="ru"><trans-title>Акушерство и гинекология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0300-9092</issn><issn publication-format="electronic">2412-5679</issn><publisher><publisher-name xml:lang="en">Bionika Media</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">716481</article-id><article-id pub-id-type="doi">10.18565/aig.2026.13</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Comparative effectiveness of ML model and fetal medicine foundation algorithm for preterm preeclampsia prediction: a validation study in Russian population</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительная эффективность ML-модели и алгоритма Фонда медицины плода для прогнозирования преэклампсии в сроке до 37 недель: валидационное исследование в российской популяции</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7834-096X</contrib-id><name-alternatives><name xml:lang="en"><surname>Ivshin</surname><given-names>Aleksandr A.</given-names></name><name xml:lang="ru"><surname>Ившин</surname><given-names>Александр Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, Associate Professor, Head of the Department of Obstetrics and Gynecology, Dermatovenerology of the Medical Institute</p></bio><bio xml:lang="ru"><p>к.м.н., доцент, заведующий кафедрой акушерства и гинекологии, дерматовенерологии Медицинского института им. проф. А.П. Зильбера</p></bio><email>scipeople@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1450-650X</contrib-id><name-alternatives><name xml:lang="en"><surname>Boldina</surname><given-names>Yuliya S.</given-names></name><name xml:lang="ru"><surname>Болдина</surname><given-names>Юлия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD Student, Senior Lecturer of Department of Obstetrics, Gynecology, Dermatovenereology of the Medical Institute, Obstetrician-Gynecologist</p></bio><bio xml:lang="ru"><p>аспирант, старший преподаватель кафедры акушерства и гинекологии, дерматовенерологии Медицинского института им. проф. А.П. Зильбера, врач акушер-гинеколог</p></bio><email>ulia.isakova94@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-2722-5976</contrib-id><name-alternatives><name xml:lang="en"><surname>Malyshev</surname><given-names>Nikita A.</given-names></name><name xml:lang="ru"><surname>Малышев</surname><given-names>Никита Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD Student in the scientific specialty «Information-Measuring and Control Systems», Lecturer, Department of Family Medicine, Public Health, Healthcare Management, Life Safety, Disaster Medicine of the Medical Institute</p></bio><bio xml:lang="ru"><p>аспирант по научной специальности «Информационно-измерительные и управляющие системы», преподаватель кафедры семейной медицины, общественного здоровья, организации здравоохранения, безопасности жизнедеятельности, медицины катастроф Медицинского института им. проф. А.П. Зильбера</p></bio><email>malyshev.nikita.2016@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Petrozavodsk State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Петрозаводский государственный университет»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Republican Perinatal Center named after K.A. Gutkin</institution></aff><aff><institution xml:lang="ru">ГБУЗ РК «Республиканский перинатальный центр имени Гуткина К.А.»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-07-17" publication-format="electronic"><day>17</day><month>07</month><year>2026</year></pub-date><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>109</fpage><lpage>124</lpage><history><date date-type="received" iso-8601-date="2026-07-16"><day>16</day><month>07</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-07-16"><day>16</day><month>07</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Bionika Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО «Бионика Медиа»</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Bionika Media</copyright-holder><copyright-holder xml:lang="ru">ООО «Бионика Медиа»</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0300-9092/article/view/716481">https://journals.eco-vector.com/0300-9092/article/view/716481</self-uri><abstract xml:lang="en"><p><bold>Objective.</bold> To compare the performance of a machine-learning (ML) model based on logistic regression with Platt scaling and the Fetal Medicine Foundation (FMF) algorithm for predicting preterm pre-eclampsia in a Russian population.</p> <p><bold>Materials and methods.</bold> This retrospective cohort study included 14 950 singleton pregnancies (development cohort: n=7581; validation cohort: n=7369). Maternal characteristics, biophysical markers (systolic blood pressure and uterine artery pulsatility index), and biochemical markers (PlGF, PAPP-A, and sFlt-1) assessed at 11–13 weeks of gestation were analyzed. The primary outcome was pre-eclampsia requiring delivery before 37 weeks of gestation. Discrimination (AUC), calibration (observed-to-expected ratio [O:E] and Brier score), and clinical utility (decision curve analysis [DCA] ) were compared.</p> <p><bold>Results.</bold> On internal validation, the ML model outperformed the FMF algorithm (AUC 0.923 vs. 0.906; ΔAUC=+0.017; p=0.013). On external validation, the between-model difference was not statistically significant (AUC 0.900 vs. 0.889; p=0.229). The ML model demonstrated substantially better calibration (O:E 0.974 vs. 0.808). The intersection of the ROC curves was observed at a false-positive rate threshold of approximately 7–8%.</p> <p><bold>Conclusion.</bold> The ML model showed comparable discriminative performance and markedly superior calibration compared with the FMF algorithm. The observed complementarity of the models suggests the potential of hybrid approaches to optimize preeclampsia screening in the Russian population.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель. </bold>Сравнительная оценка эффективности ML-модели на основе логистической регрессии с калибровкой по методу Платта и алгоритма Фонда медицины плода (Fetal Medicine Foundation, FMF) для прогнозирования преэклампсии в сроке до 37 недель (preterm preeclampsia, преждевременная преэклампсия) в российской популяции.</p> <p><bold>Материалы и методы</bold>. Ретроспективное когортное исследование включало 14 950 одноплодных беременностей (когорта разработки: n=7581; когорта валидации: n=7369). Оценивались материнские характеристики, биофизические (САД, ПИ маточных артерий) и биохимические (PlGF, PAPP-A, sFlt-1) маркеры в 11–13 недель. Исходом являлась преэклампсия с родоразрешением &lt; 37 недель. Сравнивались дискриминация (AUC), калибровка (O:E, Brier score) и клиническая полезность (DCA).</p> <p><bold>Результаты.</bold> При внутренней валидации ML-модель превосходила алгоритм FMF (AUC 0,923 против 0,906; ΔAUC=+0,017; p=0,013). При внешней валидации различия были статистически незначимы (AUC 0,900 против 0,889; p=0,229). ML-модель продемонстрировала существенно лучшую калибровку (O:E 0,974 против 0,808). Выявлено пересечение ROC-кривых при пороге 7–8% ложноположительных результатов.</p> <p><bold>Заключение. </bold>ML-модель продемонстрировала сопоставимую дискриминационную способность и существенно лучшую калибровку по сравнению с алгоритмом FMF. Выявленная комплементарность моделей указывает на потенциал гибридных подходов для оптимизации скрининга преэклампсии в российской популяции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pre-eclampsia</kwd><kwd>prediction</kwd><kwd>machine learning</kwd><kwd>FMF algorithm</kwd><kwd>first-trimester screening</kwd><kwd>validation</kwd><kwd>calibration</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>преэклампсия</kwd><kwd>прогнозирование</kwd><kwd>машинное обучение</kwd><kwd>алгоритм FMF</kwd><kwd>скрининг первого триместра</kwd><kwd>валидация</kwd><kwd>калибровка</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation grant No. 24-25-00429, https://rscf.ru/project/24-25-00429/.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-25-00429, https://rscf.ru/project/24-25-00429/.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Brown M.A., Magee L.A., Kenny L.C., Karumanchi S.A., McCarthy F.P., Saito S. et al.; International Society for the Study of Hypertension in Pregnancy (ISSHP). 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