Results 31 to 40 of about 215,880 (264)
Sidedness is prognostic in locoregional colon cancer: an analysis of 9509 Australian patients
BMC Cancer, 2017 Background/Aim Right sided colon cancer (RsCC) is proposed to be a distinct disease entity to left sided colon cancer (LsCC). We seek to confirm primary tumour location as an independent prognostic factor in locoregional colorectal cancer.
Daniel Brungs +10 more
doaj +1 more source
Frontiers in Surgery, 2022 PurposeThis study aims to identify the independent risk factors in the low anterior resection syndrome (LARS) after surgery for colorectal cancer (CRC).MethodThis was a retrospective, single-institution study in the Second Affiliation Hospital of Dalian ...
HyokJu Ri +8 more
doaj +1 more source
An L1-type estimator of multivariate location and shape [PDF]
Statistical Methods and Applications, 2006 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Roelant, Ella, Van Aelst, Stefan
openaire +2 more sources
Multivariate Location: Robust Estimators And Inference
Journal of Modern Applied Statistical Methods, 2004 It has long been known that under arbitrarily small departures from normality, the sample mean can have poor efficiency relative to various alternative estimators. In the multivariate case, (affine equivariant) estimators have been proposed for dealing with this problem, but a comparison of various estimators by Masse and Plante (2003) indicates that ...
Rand R. Wilcox, H. J. Keselman
openaire +2 more sources
Outliers in Semi-Parametric Estimation of Treatment Effects
Econometrics, 2021 Outliers can be particularly hard to detect, creating bias and inconsistency in the semi-parametric estimates. In this paper, we use Monte Carlo simulations to demonstrate that semi-parametric methods, such as matching, are biased in the presence of ...
Gustavo Canavire-Bacarreza +2 more
doaj +1 more source
Redescending $M$-Estimates of Multivariate Location and Scatter
The Annals of Statistics, 1991 This paper studies the existence and uniqueness of simultaneous \(M\)- estimates of multivariate location and scatter. Sufficient conditions are given to ensure the existence and uniqueness of the estimates.
Kent, John T., Tyler, David E.
openaire +2 more sources
Constrained M-estimation for multivariate location and scatter
The Annals of Statistics, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kent, John T., Tyler, David E.
openaire +2 more sources
The continuous multivariate location-scale model revisited: A tale of robustness [PDF]
Biometrika, 1994 SUMMARY We consider the location-scale family of all multivariate continuous sampling distributions. Any model from the subclass induced by fixing a particular distribution on the unit sphere, combined with a standard improper prior on the scale parameter, will lead to the same inference on location and observables.
Fernández, C. +2 more
openaire +4 more sources
Cancer Medicine, 2020 Background We assessed the effect of biopsy location on the prostate cancer detection and clinically significant prostate cancer. Methods A total of 2774 patients with 12‐core prostate transrectal ultrasound‐guided prostate biopsy were included for per ...
Sangjun Yoo +5 more
doaj +1 more source
Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer
Molecular Oncology, EarlyView.PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta +10 more
wiley +1 more source