Results 1 to 10 of about 41,142 (258)

Baseline-adjusted proportional odds models for the quantification of treatment effects in trials with ordinal sum score outcomes [PDF]

open access: yesBMC Medical Research Methodology, 2020
Background Sum scores of ordinal outcomes are common in randomized clinical trials. The approaches routinely employed for assessing treatment effects, such as t-tests or Wilcoxon tests, are not particularly powerful in detecting changes in relevant ...
Muriel Buri   +3 more
doaj   +2 more sources

Correction to: Baseline-adjusted proportional odds models for the quantification of treatment effects in trials with ordinal sum score outcomes [PDF]

open access: yesBMC Medical Research Methodology, 2020
An amendment to this paper has been published and can be accessed via the original article.
Muriel Buri   +3 more
doaj   +2 more sources

Diagnostic utility of salivary gland ultrasonography in suspected primary Sjögren’s disease: a comparison of OMERACT-based ordinal and summative scoring [PDF]

open access: yesArthritis Research & Therapy
Background Salivary gland ultrasonography (SGUS) is a promising, non-invasive tool in the diagnostic workup of suspected primary Sjögren’s disease (SjD).
José Antonio Peregrina-Rivas   +7 more
doaj   +2 more sources

Latent trait or sum score: addressing measurement challenges in the prediction of self-rated symptom outcomes in psychological treatment [PDF]

open access: yesFrontiers in Psychology
ObjectiveReliable and accurate measurement is fundamental to scientific progress; however, the dominant measurement practices in psychology, clinical psychology, and prediction research often lack rigor. Improving measures using Rasch Measurement Theory (
Nils Hentati Isacsson   +4 more
doaj   +2 more sources

Anti-Sum-Asymmetry Models and Orthogonal Decomposition of Anti-Sum-Symmetry Model for Ordinal Square Contingency Tables

open access: yesAustrian Journal of Statistics, 2023
For the analysis of C × C square contingency tables, we usually estimate using a statistical model an unknown probability distribution with high confidence from obtained observations.
Shuji Ando
doaj   +1 more source

New results on perturbation-based copulas

open access: yesDependence Modeling, 2021
A prominent example of a perturbation of the bivariate product copula (which characterizes stochastic independence) is the parametric family of Eyraud-Farlie-Gumbel-Morgenstern copulas which allows small dependencies to be modeled.
Saminger-Platz Susanne   +4 more
doaj   +1 more source

How to use χ2 test correctly——CMH χ2 tests for the data collected from the three kinds of R×C contingency tables

open access: yesSichuan jingshen weisheng, 2021
The purpose of this paper was to introduce the CMH χ2 test and SAS software implementation of the three kinds of R×C contingency table data. The first type was called “two-way unordered R×C contingency table data”.
Hu Chunyan, Hu Liangping
doaj   +1 more source

DESCRIPTION OF VEHICLE PASSAGE THROUGH A MULTISEGMENT DETECTION FIELD [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2020
This paper presents the video-based description method for vehicles passing a detection field. A sequence of source images is created by consecutive frames of the input video stream.
Zbigniew CZAPLA
doaj   +1 more source

Monotone and cone preserving mappings on posets [PDF]

open access: yesMathematica Bohemica, 2023
We define several sorts of mappings on a poset like monotone, strictly monotone, upper cone preserving and variants of these. Our aim is to study in which posets some of these mappings coincide.
Ivan Chajda, Helmut Länger
doaj   +1 more source

$\aleph_1$ and the modal $\mu$-calculus [PDF]

open access: yesLogical Methods in Computer Science, 2019
For a regular cardinal $\kappa$, a formula of the modal $\mu$-calculus is $\kappa$-continuous in a variable x if, on every model, its interpretation as a unary function of x is monotone and preserves unions of $\kappa$-directed sets.
Maria João Gouveia, Luigi Santocanale
doaj   +1 more source

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