Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Quantifying and Rejecting Outliers: The Grubbs Test01:02

Quantifying and Rejecting Outliers: The Grubbs Test

Sometimes, a data set can have a recorded numerical observation that greatly  deviates from the rest of the data. Assuming that the data is normally distributed, a statistical method called the Grubbs test can be used to determine whether the observation is truly an outlier.  To perform a two-tailed Grubbs test, first, calculate the absolute difference between the outlier and the mean. Then, calculate the ratio between this difference and the standard deviation of the sample. This number is...
Receiver Operating Characteristic Plot01:15

Receiver Operating Characteristic Plot

A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
Critical Region, Critical Values and Significance Level01:16

Critical Region, Critical Values and Significance Level

The critical region, critical value, and significance level are interdependent concepts crucial in hypothesis testing.
In hypothesis testing, a sample statistic is converted to a test statistic using z, t, or chi-square distribution. A critical region is an area under the curve in  probability distributions demarcated by the critical value. When the test statistic falls in this region, it suggests that the null hypothesis must be rejected. As this region contains all those values of the test...
Decision Making: Traditional Method01:14

Decision Making: Traditional Method

The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
Multiple Comparison Tests01:13

Multiple Comparison Tests

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.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
Detection of Gross Error: The Q Test01:00

Detection of Gross Error: The Q Test

When one or more data points appear far from the rest of the data, there is a need to determine whether they are outliers and whether they should be eliminated from the data set to ensure an accurate representation of the measured value. In many cases, outliers arise from gross errors (or human errors) and do not accurately reflect the underlying phenomenon. In some cases, however, these apparent outliers reflect true phenomenological differences. In these cases, we can use statistical methods...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Neutral molecular networks: Polarity-independent tool for mass spectrometry data.

Analytica chimica acta·2026
Same author

Can GM soybean be reliably quantified after screening? A risk-based approach for optimizing GMO testing workflow.

GM crops & food·2026
Same author

Neuroactive compounds in tomatoes: metabolic fate during in vitro digestion and colonic fermentation.

Food chemistry·2026
Same author

Decoding Heat-Shock Responses in <i>Vitis vinifera</i> L. by Metabolic, VOC, and Physiological Profiling: Toward the Identification of Volatile and Metabolic Biomarkers.

Journal of agricultural and food chemistry·2026
Same author

Profiling Neuroactive Compounds in Organic, Conventional, and Processed Tomatoes.

Foods (Basel, Switzerland)·2025
Same author

Classical biological control of the brown marmorated stink bug (Halyomorpha halys) in apple orchard: a success story.

Pest management science·2025
Same journal

Imbalance in amino acid and purine metabolisms at the hypothalamus in inflammation-associated depression by GC-MS.

Molecular bioSystems·2017
Same journal

Correction: Dynamic properties of dipeptidyl peptidase III from Bacteroides thetaiotaomicron and the structural basis for its substrate specificity - a computational study.

Molecular bioSystems·2017
Same journal

Conformational heterogeneity in tails of DNA-binding proteins is augmented by proline containing repeats.

Molecular bioSystems·2017
Same journal

Mechanism of the formation of the RecA-ssDNA nucleoprotein filament structure: a coarse-grained approach.

Molecular bioSystems·2017
Same journal

Staphylococcus aureus extracellular vesicles (EVs): surface-binding antagonists of biofilm formation.

Molecular bioSystems·2017
Same journal

Development of an AlphaLISA high throughput technique to screen for small molecule inhibitors targeting protein arginine methyltransferases.

Molecular bioSystems·2017
See all related articles

Related Experiment Video

Updated: May 20, 2026

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances
07:35

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

Thresholding for biomarker selection in multivariate data using Higher Criticism.

Ron Wehrens1, Pietro Franceschi

  • 1Centre for Research and Innovation, Fondazione Edmund Mach., Via E. Mach 1, San Michele all'Adige (TN), Italy. ron.wehrens@fmach.it

Molecular Biosystems
|June 30, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces an improved method for biomarker selection in omics sciences. The approach uses Higher Criticism to find data-specific cutoffs, enhancing the identification of true biological signals.

More Related Videos

Basics of Multivariate Analysis in Neuroimaging Data
06:35

Basics of Multivariate Analysis in Neuroimaging Data

Published on: July 24, 2010

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

Related Experiment Videos

Last Updated: May 20, 2026

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances
07:35

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

Basics of Multivariate Analysis in Neuroimaging Data
06:35

Basics of Multivariate Analysis in Neuroimaging Data

Published on: July 24, 2010

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

Area of Science:

  • Omics sciences
  • Biostatistics
  • Bioinformatics

Background:

  • Biomarker selection is crucial in omics studies for understanding biological processes.
  • Identifying true biomarkers from numerous variables is challenging.
  • Existing methods often struggle with determining appropriate cutoff values.

Purpose of the Study:

  • To extend the Higher Criticism (HC) method for multivariate biomarker selection.
  • To develop a principled approach for balancing true positive detection with minimizing false positives.
  • To provide data-specific cutoff values for more reliable biomarker identification.

Main Methods:

  • Application of Higher Criticism (HC) to multivariate data.
  • Development of data-dependent cutoff selection for biomarker identification.
  • Comparison of HC approach with standard methods for biomarker selection.

Main Results:

  • The extended HC method shows marked improvement in biomarker selection.
  • HC-derived thresholds differ significantly from previously suggested values.
  • Data-specific cutoffs enable fairer comparisons between different biomarker selection methods.

Conclusions:

  • Higher Criticism offers a robust approach for multivariate biomarker selection in omics data.
  • The use of data-specific thresholds is essential for accurate biomarker discovery.
  • This method improves the balance between sensitivity and specificity in biomarker identification.