Evidence map›Paper›PMID 42467382›Full record

ArticleIrish journal of medical science2026

Differentiating septic arthritis from non-infectious inflammatory causes of acute monoarticular arthritis in children: A machine learning approach based on routine laboratory tests.

Ozge Bayrak Demirel, Mehmet Demirel, Onur Can Bayrak, Cem Yapar, Nuray Aktay Ayaz, Ayse Kilic

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Article in Irish journal of medical science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Ozge Bayrak DemirelDepartment of Pediatric Basic Sciences, Institute of Child Health, Istanbul University, Istanbul, Türkiye. ozge.bayrakdemirel@istanbul.edu.tr.ORCID http://orcid.org/0000-0001-7780-0231
Mehmet DemirelDepartment of Orthopedics and Traumatology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Türkiye.ORCID http://orcid.org/0000-0003-1131-7719
Onur Can BayrakDepartment of Geomatic Engineering, Yildiz Technical University, Istanbul, Türkiye.ORCID http://orcid.org/0000-0002-5147-747X
Cem YaparDepartment of Orthopedics and Traumatology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Türkiye.ORCID http://orcid.org/0009-0001-1353-3178
Nuray Aktay AyazDepartment of Pediatrics, Division of Pediatric Rheumatology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Türkiye.ORCID http://orcid.org/0000-0003-3594-7387
Ayse KilicDepartment of Pediatrics, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Türkiye.ORCID http://orcid.org/0000-0003-3217-4075

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAcute monoarthritis in children poses a diagnostic challenge, particularly in distinguishing septic arthritis from non-infectious inflammatory causes. Delayed or incorrect diagnosis may lead to serious complications or inappropriate treatment. This study aims to develop and validate machine learning (ML) models for distinguishing septic arthritis from non-infectious inflammatory arthritis in children presenting with acute monoarthritis, using routinely available laboratory markers including body temperature, conventional inflammatory markers (CRP and ESR), and complete blood count (CBC) parameters along with derived hematologic ratios.

methodsWe retrospectively analyzed data from 129 pediatric patients, including 66 with non-septic arthritis and 63 with septic arthritis. Conventional inflammatory markers and CBC-derived ratios (e.g., neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, red cell distribution width-to-platelet ratio) were collected. The dataset was split into training (80%) and test (20%) sets. Five supervised ML algorithms-Random Forest (RF), Extreme Gradient Boosting (XGBoost), Light Gradient Boosting Machine (LightGBM), AdaBoost, and Gradient Boosting-were trained using stratified tenfold cross-validation. Diagnostic performance was assessed using area under the ROC curve (AUC) and feature importance analysis.

resultsThe Random Forest model achieved the highest diagnostic accuracy with an AUC of 0.97 (95% CI: 0.911-1.000), outperforming other models and individual inflammatory markers. Among the input features, neutrophil count, CRP, and several derived ratios were consistently ranked among the most important predictors. Multivariate analysis supported the predictive value of these hematologic indices.

conclusionMachine learning models based on routine CBC parameters can aid in distinguishing septic arthritis from non-infectious causes of acute monoarthritis in children. These results support the integration of ML-based tools into emergency care workflows to facilitate earlier and more accurate clinical decision-making.

Indexed as

Acute monoarthritisChildrenComplete blood countInflammatory arthritisInflammatory markersMachine learningSeptic arthritis

Identifiers

PMID42467382

What Socratic holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.