Results 11 to 20 of about 2,957,243 (305)
Entropy, 2022 Minimum Renyi’s pseudodistance estimators (MRPEs) enjoy good robustness properties without a significant loss of efficiency in general statistical models, and, in particular, for linear regression models (LRMs). In this line, Castilla et al.
María Jaenada, Leandro Pardo
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On the Formulation of Wald Tests of Nonlinear Restrictions [PDF]
Econometrica, 1988 Summary: This paper utilizes asymptotic expansions of the Edgeworth type to investigate alternative forms of the Wald test of nonlinear restrictions. Some formulae for the asymptotic expansion of the distribution of the Wald statistic are provided for a general case that should include most econometric applications. When specialized to the simple cases
Phillips, Peter C B, Park, Joon Y
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Fast score test with global null estimation regardless of missing genotypes. [PDF]
PLoS ONE, 2018 In genome-wide association studies (GWASs) for binary traits (or case-control samples) in the presence of covariates to be adjusted for, researchers often use a logistic regression model to test variants for disease association.
Shuntaro Sato +2 more
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Mathematics, 2023 This study is intended as a note and provides an extension to a much-used and established test for portfolio efficiency, the Gibbons, Ross, and Shanken GRS-Wald test.
Pankaj Agrrawal
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Simple wald tests of the fractional integration parameter: an overview of new results [PDF]
, 2009 Forthcoming 2008This paper presents an overview of some new results regarding an easily implementable Wald test-statistic (EFDF test) of the null hypotheses that a time-series process is I(1) or I(0) against fractional I(d) alternatives, with d ∈ (0, 1),
Gonzalo, Jesús +2 more
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Type I error control for cluster randomized trials under varying small sample structures
BMC Medical Research Methodology, 2021 Background Linear mixed models (LMM) are a common approach to analyzing data from cluster randomized trials (CRTs). Inference on parameters can be performed via Wald tests or likelihood ratio tests (LRT), but both approaches may give incorrect Type I ...
Joshua R. Nugent, Ken P. Kleinman
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On testing proportional odds assumptions for proportional odds models
General Psychiatry, 2023 Proportional odds models are commonly used to model ordinal responses, but the proportional odds assumption may not hold in practice, leading to biased inference.
Xin M Tu, Hua He, Anqi Liu, Wan Tang
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Asymptotic Sample Size for Common Test of Relative Risk Ratios in Stratified Bilateral Data
Mathematics, 2023 In medical clinical studies, various tests usually relate to the sample size. This paper proposes several methods to calculate sample sizes for a common test of relative risk ratios in stratified bilateral data.
Keyi Mou, Zhiming Li, Changxing Ma
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Robust Test Statistics Based on Restricted Minimum Rényi’s Pseudodistance Estimators
Entropy, 2022 The Rao’s score, Wald and likelihood ratio tests are the most common procedures for testing hypotheses in parametric models. None of the three test statistics is uniformly superior to the other two in relation with the power function, and moreover, they ...
María Jaenada +2 more
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A Note on the Wald, Lagrangian Multiplier and Likelihood Ratio Tests when the Information Matrix is Singular [PDF]
The Egyptian Statistical Journal, 1988 Modified formulas for the Wald and Lagrangian multiplier statistics are introduced and considered together with the likelihood ratio statistic for testing a typical null hypothesis Ho stated in terms of equality constraints.
Abdalla El-Helbawy, Tawfik Hassan
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