Results 11 to 20 of about 16,829,601 (344)
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
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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
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This paper considers tests for the rank of a matrix for which a root-T consistent estimator is available. However, in contrast to tests associated with the minimum chi-square and asymptotic least squares principles, the estimator's asymptotic variance matrix is not required to be either full or of known rank.
Robin, Jean-Marc, Smith, Richard
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Wilcoxon Rank-Based Tests for Clustered Data with R Package clusrank [PDF]
Wilcoxon rank-based tests are distribution-free alternatives to the popular two-sample and paired t tests. For independent data, they are available in several R packages such as stats and coin.
Yujing Jiang +4 more
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Rank tests and regression rank score tests in measurement error models [PDF]
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jana Jurecková +2 more
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Simple nonparametric classes of alternatives are defined for various nonparametric hypotheses. The power of a number of such tests against these alternatives is obtained and illustrated with some numerical results. Optimum rank tests against certain types of alternatives are derived, and optimum properties of Wilcoxon’s one- and two-sample tests and of
E. Lehmann
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Rank Tests for Nonlinear Cointegration [PDF]
A test procedure based on ranks is suggested to test for nonlinear cointegration. For two (or more) time series it is assumed that monotonic transformations exist such that the normalized series can asymptotically be represented as Wiener processes. Rank-test procedures based on the difference between the sequences of ranks are suggested.
J. Breitung
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8 pages, 4 figures. See also http://bio.math.berkeley.edu/ranktests/.
Morton, Jason +4 more
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Rank tests are the most important methods of nonparametric statistics. In the introductory part, there are discussions of parametric and nonparametric metods and as a result of those discussions it is established that the rank tests are one of the most ...
Timotijević Marjana
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Convex Rank Tests and Semigraphoids [PDF]
Convex rank tests are partitions of the symmetric group which have desirable geometric properties. The statistical tests defined by such partitions involve counting all permutations in the equivalence classes. Each class consists of the linear extensions of a partially ordered set specified by data.
Jason Morton +4 more
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