Results 1 to 10 of about 1,456,756 (304)

Reference curve sampling variability in one-sample log-rank tests. [PDF]

open access: yesPLoS ONE, 2022
The one-sample log-rank test is the method of choice for single-arm Phase II trials with time-to-event endpoint. It allows to compare the survival of patients to a reference survival curve that typically represents the expected survival under standard of
Moritz Fabian Danzer   +3 more
doaj   +2 more sources

Estimation of treatment effects in weighted log-rank tests [PDF]

open access: yesContemporary Clinical Trials Communications, 2017
Non-proportional hazards have been observed in clinical trials. The log-rank test loses power and the standard Cox model generally produces biased estimates under such conditions.
Ray S. Lin, Larry F. León
doaj   +2 more sources

Accurate and efficient P-values for rank-based independence tests with clustered data using a saddlepoint approximation [PDF]

open access: yesScientific Reports
Accurate statistical inference for clustered data—common in multi-center clinical trials and longitudinal studies—poses significant challenges due to within-cluster correlation. Rank-based tests like the logrank, Wilcoxon, and Datta-Satten are valued for
Haidy A. Newer
doaj   +2 more sources

Bayesian rank-based hypothesis testing for the rank sum test, the signed rank test, and Spearman'sρ [PDF]

open access: yesJournal of Applied Statistics, 2020
33 pages, 12 ...
J. van Doorn   +3 more
openaire   +5 more sources

La somme des rangs de Wilcoxon, ses moments, sa distribution nulle,avec illustration et compléments [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2020
This paper delves into Wilcoxon's sum-of-ranks $R$ statistic (and Mann-Whitney's translated equivalent $U$) for testing the difference between two groups.
Laurencelle, Louis
doaj   +1 more source

Log-rank and stratified log-rank tests

open access: yesStatistical Theory and Related Fields, 2023
In randomized clinical trials with right-censored time-to-event outcomes, the popular log-rank test without adjusting for baseline covariates is asymptotically valid for treatment effect under simple randomization of treatments but is too conservative ...
Ting Ye, Jun Shao, Yanyao Yi
doaj   +1 more source

Rank Score Tests [PDF]

open access: yesCirculation, 2006
Nonparametric statistical methods are useful tools for data analysis when there is reason to believe that the outcome variables of interest may fail certain distributional assumptions required for parametric methods. Variables may be ordered categories in nature and thereby not suitable for analysis methods that assume normally distributed variables ...
Lisa M, LaVange, Gary G, Koch
openaire   +2 more sources

Low-Rank Methods in Event Detection With Subsampled Point-to-Subspace Proximity Tests

open access: yesIEEE Access, 2022
Monitoring of streamed data to detect abnormal behaviour (variously known as event detection, anomaly detection, change detection, or outlier detection) underlies many applications, especially within the Internet of Things. There, one often collects data
Jakub Marecek   +3 more
doaj   +1 more source

Pacing Strategies Differ by Sex and Rank in 2020 CrossFit® Open Tests

open access: yesSports, 2023
This retrospective study collected video recordings of a random selection of eighty men and women (n = 160) completing all five tests of the 2020 CrossFit® Open.
Gerald T. Mangine   +5 more
doaj   +1 more source

Investigating the impact of GDP and distance variables in the gravity model using sign and rank tests [PDF]

open access: yesEastern Journal of European Studies, 2021
The gravity model of trade has been a workhorse of international economics over the last fifty years. The main variables incorporated in the standard gravity model of trade are gross domestic product of trading countries and distance between them.
Berislav ŽMUK, Hrvoje JOŠIĆ
doaj   +1 more source

Home - About - Disclaimer - Privacy