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

