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23,722 results

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Showing results for sum test
Search for Sam Testa instead (1 results)
A rank-sum test for clustered data when the number of subjects in a group within a cluster is informative.
Dutta S, Datta S. Dutta S, et al. Biometrics. 2016 Jun;72(2):432-40. doi: 10.1111/biom.12447. Epub 2015 Nov 17. Biometrics. 2016. PMID: 26575695 Free PMC article.
The Wilcoxon rank-sum test is a popular nonparametric test for comparing two independent populations (groups). ...We are faced with a situation where the group specific marginal distribution in a cluster depends on the number of observations in that group (i. …
The Wilcoxon rank-sum test is a popular nonparametric test for comparing two independent populations (groups). ...We ar …
Effect of quadriceps training at different levels of blood flow restriction on quadriceps strength and thickness in the mid-term postoperative period after anterior cruciate ligament reconstruction: a randomized controlled external pilot study.
Li X, Li J, Qing L, Wang H, Ma H, Huang P. Li X, et al. BMC Musculoskelet Disord. 2023 May 8;24(1):360. doi: 10.1186/s12891-023-06483-x. BMC Musculoskelet Disord. 2023. PMID: 37158913 Free PMC article. Clinical Trial.
Assessments included scaled maximal isokinetic knee extension strength at 60/s and 180/s, the sum of the thickness of the affected femoris rectus and vastus intermedius, Y-balance test performance, and International Knee Documentation Committee questionnaire respons …
Assessments included scaled maximal isokinetic knee extension strength at 60/s and 180/s, the sum of the thickness of the affected fe …
Directional-sum test for nonparametric Behrens-Fisher problem with applications to the dietary intervention trial.
Meng Z, Yang Q, Li Q, Zhang B. Meng Z, et al. Stat Methods Med Res. 2021 Jul;30(7):1640-1653. doi: 10.1177/09622802211002864. Epub 2021 Jun 17. Stat Methods Med Res. 2021. PMID: 34134561
For a nonparametric Behrens-Fisher problem, a directional-sum test is proposed based on division-combination strategy. A one-layer wild bootstrap procedure is given to calculate its statistical significance. We conduct simulation studies with data generated from log …
For a nonparametric Behrens-Fisher problem, a directional-sum test is proposed based on division-combination strategy. A one-l …
Consistency of efficacy results across various clinical measures and statistical methods in the lecanemab phase 2 trial of early Alzheimer's disease.
Dhadda S, Kanekiyo M, Li D, Swanson CJ, Irizarry M, Berry S, Kramer LD, Berry DA. Dhadda S, et al. Alzheimers Res Ther. 2022 Dec 9;14(1):182. doi: 10.1186/s13195-022-01129-x. Alzheimers Res Ther. 2022. PMID: 36482412 Free PMC article. Clinical Trial.
The key secondary endpoints were ADCOMS at 18 months and Clinical Dementia Rating-Sum-of-Boxes (CDR-SB) and Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog14) at 18 months. ...CONCLUSIONS: The conclusion of the primary analysis of the lecanemab Study 201 …
The key secondary endpoints were ADCOMS at 18 months and Clinical Dementia Rating-Sum-of-Boxes (CDR-SB) and Alzheimer's Disease Asses …
Weighted Transmission Disequilibrium Test for Family Trio Association Design.
Fang H, Yang Y, Chen L. Fang H, et al. Hum Hered. 2018;83(4):196-209. doi: 10.1159/000494353. Epub 2019 Mar 13. Hum Hered. 2018. PMID: 30865952
BACKGROUND: Family-based design is one of the most popular designs in genetic studies. Transmission disequilibrium test (TDT) for family trio design is optimal only under the additive trait model and may lose power under the other trait models. ...In this pap …
BACKGROUND: Family-based design is one of the most popular designs in genetic studies. Transmission disequilibrium test (TDT) …
Precise and accurate power of the rank-sum test for a continuous outcome.
Mollan KR, Trumble IM, Reifeis SA, Ferrer O, Bay CP, Baldoni PL, Hudgens MG. Mollan KR, et al. J Biopharm Stat. 2020 Jul 3;30(4):639-648. doi: 10.1080/10543406.2020.1730866. Epub 2020 Mar 4. J Biopharm Stat. 2020. PMID: 32126888 Free PMC article.
Accurate power calculations are essential in small studies containing expensive experimental units or high-stakes exposures. Herein, power of the Wilcoxon Mann-Whitney rank-sum test of a continuous outcome is formulated using a Monte Carlo approach and defining [For …
Accurate power calculations are essential in small studies containing expensive experimental units or high-stakes exposures. Herein, power o …
Sequence kernel association test for survival traits.
Chen H, Lumley T, Brody J, Heard-Costa NL, Fox CS, Cupples LA, Dupuis J. Chen H, et al. Genet Epidemiol. 2014 Apr;38(3):191-7. doi: 10.1002/gepi.21791. Epub 2014 Jan 26. Genet Epidemiol. 2014. PMID: 24464521 Free PMC article.
It is often described as a variance component test treating the genotypic effects as random. When the linear kernel is used, its test statistic can be expressed as a weighted sum of single-marker score test statistics. ...This test can also be a …
It is often described as a variance component test treating the genotypic effects as random. When the linear kernel is used, its t …
Tools to Improve Scientific Research.
Rossi MJ, Brand JC, Lubowitz JH. Rossi MJ, et al. Arthroscopy. 2018 Dec;34(12):3113-3114. doi: 10.1016/j.arthro.2018.10.013. Arthroscopy. 2018. PMID: 30509419
In addition, with a goal of improving the quality of the scientific research published in our journal and others, we develop and publish research pearls, statistical guides, article checklists and templates, and related tools. In sum, this effort allows our c …
In addition, with a goal of improving the quality of the scientific research published in our journal and others, we develop and publ …
A flexible multi-domain test with adaptive weights and its application to clinical trials.
Zhao Y, Yu Q, Lake SL. Zhao Y, et al. Pharm Stat. 2020 May;19(3):315-325. doi: 10.1002/pst.1993. Epub 2019 Dec 30. Pharm Stat. 2020. PMID: 31886602
The test is a weighted sum of domain-specific test statistics with weights selected adaptively via a data-driven algorithm. ...Data from a clinical trial in a rare lysosomal storage disorder were used to illustrate the properties of the proposed test. …
The test is a weighted sum of domain-specific test statistics with weights selected adaptively via a data-driven algori …
Wilcoxon rank-sum tests to detect one-sided mixture alternatives in group sequential clinical trials.
Friel DC, Jeske DR. Friel DC, et al. Stat Methods Med Res. 2023 Sep;32(9):1711-1727. doi: 10.1177/09622802231184634. Epub 2023 Jul 11. Stat Methods Med Res. 2023. PMID: 37431736
The possibility that an individual from the treatment group may not respond to the treatment motivates the use of a mixture distribution for the treatment group. This paper considers two test procedures based on the Wilcoxon rank-sum statistic for a group sequential …
The possibility that an individual from the treatment group may not respond to the treatment motivates the use of a mixture distribution for …
23,722 results
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