Results 41 to 50 of about 13,427,618 (297)

Homogeneity Test of Response Rate Functions in Bilateral Correlated Data under Dallal’s Model

open access: yesComplexity, 2023
In clinical studies, paired binary metadata are often encountered during collecting information from paired organs or parts. The risk difference, relative risk ratio, and odds ratios of response rates are widely used to measure cured effects for such ...
Hengyi Zhao   +4 more
doaj   +1 more source

Robust-BD Estimation and Inference for General Partially Linear Models

open access: yesEntropy, 2017
The classical quadratic loss for the partially linear model (PLM) and the likelihood function for the generalized PLM are not resistant to outliers. This inspires us to propose a class of “robust-Bregman divergence (BD)” estimators of both the parametric
Chunming Zhang, Zhengjun Zhang
doaj   +1 more source

Liver retransplantation in adults: the largest multicenter Italian study. [PDF]

open access: yesPLoS ONE, 2012
This study is the largest Italian survey on liver retransplantations (RET). Data report on 167 adult patients who received 2 grafts, 16 who received 3 grafts, and one who received 4 grafts over a 11 yr period.There was no statistically significant ...
Umberto Maggi   +12 more
doaj   +1 more source

Generalised Wald Type Test of Nonlinear Restrictions

open access: yesOALib, 2005
Abstract This paper proposes a generalised Wald type tests to test the hypothesis of nonlinear restrictions. We circumvent the problem of singularity of the covariance matrix associated with the usual Wald test by proposing a generalised inverse procedure, and an alternative simple procedure which can be approximated by a suitable chi-square ...
openaire   +1 more source

Robust approach for comparing two dependent normal populations through Wald-type tests based on Rényi’s pseudodistance estimators

open access: yesStatistics and Computing, 2022
AbstractSince the two seminal papers by Fisher (Biometrika 10:507–521, 1915; Metron 1:1–32, 1921) were published, the test under a fixed value correlation coefficient null hypothesis for the bivariate normal distribution constitutes an important statistical problem.
Elena Castilla   +3 more
openaire   +4 more sources

Power comparison among tests for fractional unit roots [PDF]

open access: yes, 2008
This article compares the asymptotic power properties of the Wald, the Lagrange Multiplier and the Likelihood Ratio test for fractional unit roots. The paper shows that there is an asymptotic inequality between the three tests that holds under fixed ...
Velasco Gómez, Carlos   +2 more
core   +1 more source

Discussions on the integrable dynamics of charged particles around Kerr-Newman black holes in combined gravitational and electromagnetic fields

open access: yesPhysics Letters B
There are three types of electromagnetic potentials in Kerr-Newman backgrounds. The first type potential is a self-consistent potential, which was considered by Carter in 1968.
Caiyu Liu, Xin Wu
doaj   +1 more source

Misspecification in Generalized Linear Mixed Models and Its Impact on the Statistical Wald Test

open access: yesApplied Sciences, 2023
Generalized linear mixed models are commonly used in repeated measurement studies and account for the dependence between observations obtained from the same experimental unit.
Diana Arango-Botero   +2 more
doaj   +1 more source

Wald test for heteroscedasticity (indirect impact).

open access: yes, 2022
Wald test for heteroscedasticity (indirect impact).
Mansoor Mushtaq (13994340)   +4 more
core   +1 more source

Homogeneity Test of Many-to-One Risk Differences for Correlated Binary Data under Optimal Algorithms

open access: yesComplexity, 2021
In clinical studies, it is important to investigate the effectiveness of different therapeutic designs, especially, multiple treatment groups to one control group.
Keyi Mou, Zhiming Li
doaj   +1 more source

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