Results 101 to 110 of about 488,717 (225)

The receiver operating characteristic curve accurately assesses imbalanced datasets

Patterns
Summary Many problems in biology require looking for a “needle in a haystack,” corresponding to a binary classification where there are a few positives within a much larger set of negatives, which is referred to as a class imbalance.
Eve Richardson, Raphael Trevizani, J. Greenbaum, Hannah Carter, Morten Nielsen, Bjoern Peters   +5 more
semanticscholar   +1 more source

Analysis of factors associated with positive surgical margins and the five-year survival rate after prostate cancer resection and predictive modeling

Frontiers in Oncology
BackgroundThis study analyzed the risk factors associated with positive surgical margins (PSM) and five-year survival after prostate cancer resection to construct a positive margin prediction model.MethodsWe retrospectively analyzed the clinical data of ...
Kai Li, Yantao Zhang, Sinan Tian, Qingguo Su, Yanhui Mei, Wei Shi, Jingyuan Cao, Lijuan Song   +7 more
doaj   +1 more source

Parameters behind "nonparametric" statistics: Kendall's tau,Somers' D and median differences

So-called "nonparametric" statistical methods are often in fact based on population parameters, which can be estimated (with confidence limits) using the corresponding sample statistics.
Roger Newson
core  

Adjusted empirical likelihood estimation of the youden index and associated threshold for the bigamia model [PDF]

The Youden index is a widely used measure in the framework of medical diagnostic, where the effectiveness of a biomarker (screening marker or predictor) for classifying a disease status is studied.
Emilio Leton, Elisa M. Molanes
core  

The categorisation of the Short Warwick Edinburgh Mental Wellbeing Scale scores: an exploration from an epidemiological perspective

Frontiers in Psychiatry
BackgroundThere has been a notable increase in the utilisation of SWEMWBS as a measure of mental well-being globally. To enhance its interpretability for both healthcare professionals and laypeople, categorising SWEMWBS scores is considered beneficial ...
Lawrence T. Lam, Lawrence T. Lam, Lawrence T. Lam, Mary K. Lam   +3 more
doaj   +1 more source

nonbinROC: Software for Evaluating Diagnostic Accuracies with Non-Binary Gold Standards

ROC analysis is a standard method for estimating and comparing diagnostic tests' accuracies when the gold standard is binary. However, there are many situations when the gold standard is not binary.
Paul Nguyen
core  

Machine Learning-Based Classification and Statistical Analysis of Liver Cancer: A Comprehensive Study of Model Performance and Clinical Significance

Applied Medical Informatics
Background: The liver is an internal organ located in the upper right section of the abdomen, just beneath the diaphragm, and near the stomach. It performs numerous functions that are essential for metabolism, digestion, detoxification, and nutrient ...
Pratyush Kumar MAHARANA, Tapan Kumar BEHERA, Pradeep Kumar NAIK   +2 more
doaj  

Risk factors for necrotizing enterocolitis in preterm infants: a 1:1 matched case-control study

Frontiers in Pediatrics
ImpactThis study demonstrates that neonatal sepsis, blood transfusion, combined antibiotic use, asphyxia, and maternal gestational diabetes (GDM) are independent risk factors for NEC.
Lie Huang, Jianhui Wang, Xiaomei Fu, Meile Cheng, Xi Xu   +4 more
doaj   +1 more source

PresenceAbsence: An R Package for Presence Absence Analysis

The PresenceAbsence package for R provides a set of functions useful when evaluating the results of presence-absence analysis, for example, models of species distribution or the analysis of diagnostic tests.
Elizabeth A. Freeman, Gretchen Moisen
core  

Use of Receiver Operating Characteristic (ROC) Curve Analysis for Tyrer-Cuzick and Gail in Breast Cancer Screening in Jiangxi Province, China. [PDF]

Med Sci Monit, 2018
Zhang L, Jie Z, Xu S, Zhang L, Guo X.
europepmc   +1 more source