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Related Concept Videos

Multiple Comparison Tests01:13

Multiple Comparison Tests

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Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
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Pericarditis II: Clinical Features and Diagnostic Tests01:19

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Pericarditis is distinguished by inflammation of the pericardium, the fibrous sac that encases the heart. It can be acute, lasting less than six weeks, or chronic, persisting for over three months. Understanding its clinical manifestations and diagnostic findings is crucial for timely and effective management.Clinical ManifestationsWhile pericarditis can be asymptomatic, it usually presents with characteristic symptoms such as:Chest Pain: The most characteristic symptom of pericarditis is chest...
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Myocarditis II: Clinical Features and Diagnostic Tests01:27

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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

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Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
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Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

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Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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Multiple Testing of Mix-and-Match Feature Sets in Multi-Omics.

Mitra Ebrahimpoor1, Renée Menezes2, Ningning Xu1

  • 1Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands.

Statistics in Medicine
|January 22, 2026
PubMed
Summary
This summary is machine-generated.

We introduce OCEAN, a new method for analyzing multiple omics datasets simultaneously. OCEAN extends simultaneous enrichment analysis (SEA) to handle complex biological data, improving interpretability and addressing multiple testing challenges.

Keywords:
closed testingfeature set testingmultiple testingmulti‐omics

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Genomics

Background:

  • Integrated analysis of multi-omics datasets is crucial for understanding complex biological processes.
  • High dimensionality of omics data presents challenges in interpretability and multiple testing.
  • Simultaneous Enrichment Analysis (SEA) was developed for single-omics data to address these issues.

Purpose of the Study:

  • To introduce OCEAN, a novel extension of SEA designed for multi-omics data analysis.
  • To provide a flexible framework for analyzing pairwise feature sets across different genomics datasets.
  • To propose new error rates tailored for two-way data structures to enhance result interpretation.

Main Methods:

  • OCEAN extends the Simultaneous Enrichment Analysis (SEA) methodology.
  • It enables the analysis of all possible two-way feature sets from paired genomics datasets.
  • New error rates are proposed to align with the two-way data structure.

Main Results:

  • OCEAN demonstrates flexibility in analyzing multi-omics data.
  • The method facilitates simultaneous feature set testing across paired datasets.
  • Application to breast and colon cancer data showcases its utility in analyzing copy number and gene expression.

Conclusions:

  • OCEAN offers a powerful approach for integrated multi-omics analysis.
  • It effectively addresses interpretability and multiple testing challenges in high-dimensional omics data.
  • The method provides a valuable tool for uncovering complex biological insights from combined genomic datasets.