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Local rank tests in a multivariate nonparametric relationship [PDF]
Consider a multivariate nonparametric model where the unknown vector of functions depends on two sets of explanatory variables. For a fixed level of one set of explanatory variables, we provide consistent statistical tests, called local rank tests, to ...
Natércia Fortuna
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BMC Medical Research Methodology, 2018 Background In the presence of an intermediate clinical event, the analysis of time-to-event survival data by conventional approaches, such as the log-rank test, can result in biased results due to the length-biased characteristics. Methods In the present
Sohee Kim, Jinheum Kim, Chung Mo Nam
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
wiley +1 more source
Local and global rank tests for multivariate varying-coefficient models [PDF]
In a multivariate varying-coefficient model, the response vectors Y are regressed on known functions u(X) of some explanatory variables X and the coefficients in an unknown regression matrix q(Z) depend on another set of explanatory variables Z.
Stephen G. Donald +2 more
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Unbalanced groups in nonparametric survival tests [PDF]
, 2008 It is fairly common to find medical examples with survival data with unequal sample size among the groups. There are several tests for those cases, but in practice, the use of one test instead of another is done without justifying the election ...
Letón, Emilio, Zuluaga, Pilar
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Statistical Testing on Prediction of Software Defects
EAI Endorsed Transactions on Energy Web, 2018 Statistical Tests are used to make inferences from data. These tests will tell whether the observed pattern is real or just due to chance. The type of the test, to be used, depends on research design, distribution of data and type of variables.
Satya Srinivas Maddipati +1 more
doaj +1 more source
Organoids in pediatric cancer research
FEBS Letters, EarlyView.Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley +1 more source
On rank estimation in semidefinite matrices [PDF]
This work concerns the problem of rank estimation in semidefinite matrices, having either indefinite or semidefinite matrix estimator satisfying a typical asymptotic normality condition.
Stephen G. Donald +2 more
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Journal of Statistical Theory and Applications (JSTA)Left-truncated data arise when events of interest are only recorded if they occur after a pre-specified time point. Events occurring before this point are excluded from the dataset, resulting in left truncation.
Kholoud S. Kamal +1 more
doaj +1 more source
The Annals of Mathematical Statistics, 1955 This paper suggests several `goodness of fit' test criteria, all having a linear form. The moment generating function and the limiting distribution of this linear form are obtained in Section 2. The best test criterion of this form for testing a simple hypothesis $H_0$ against a simple alternative hypothesis $H_1$ is shown, in Section 3, to be in ...
openaire +2 more sources