Results 71 to 80 of about 294,096 (237)

Exact and Asymptotic Weighted Logrank Tests for Interval Censored Data: The interval R Package [PDF]

For right-censored data perhaps the most commonly used tests are weighted logrank tests, such as the logrank and Wilcoxon-type tests. In this paper we review several generalizations of those weighted logrank tests to interval-censored data and present an
Michael P. Fay, Pamela A. Shaw
core   +1 more source

Prevalence of Systemic Lupus Erythematosus in Australia, 2010–2022: A Population‐Based Study Using Linked National Administrative Health Data

Arthritis Care &Research, EarlyView.
Objective Systemic lupus erythematosus (SLE) is a heterogenous inflammatory condition with widely varying global prevalence estimates. The frequency of SLE in the general population of Australia has been reported to be notably lower than contemporary estimates in countries such as the United States or United Kingdom, at 19 to 39 per 100,000 as opposed ...
Lucinda Roper, Rachel Black, Joanna Tieu, Winnie Chen, Matthew Parker, Catherine Hill, Natasha Nassar, Mandana Nikpour   +7 more
wiley   +1 more source

Censored Bimodal Symmetric-Asymmetric Alpha-Power Model

Revista Colombiana de Estadística, 2013
We introduce the censored bimodal symmetric-asymmetric alpha-power models to adjust censored data with bimodality and high levels of skewness and kurtosis. The moments corresponding are computed, the maximum likelihood estimation for the model parameters
HUGO S. SALINAS, GUILLERMO MARTÍNEZ-FLÓREZ, GERMÁN MORENO-ARENAS   +2 more
doaj  

Sequential projection pursuit principal component analysis – dealing with missing data associated with new -omics technologies

BioTechniques, 2013
Principal Component Analysis (PCA) is a common exploratory tool used to evaluate large complex data sets. The resulting lower-dimensional representations are often valuable for pattern visualization, clustering, or classification of the data.
Bobbie-Jo M. Webb-Robertson, Melissa M. Matzke, Thomas O. Metz, Jason E. McDermott, Hyunjoo Walker, Karin D. Rodland, Joel G. Pounds, Katrina M. Waters   +7 more
doaj   +1 more source

Semiparametric Robust Estimation of Truncated and Censored Regression Models [PDF]

Many estimation methods of truncated and censored regression models such as the maximum likelihood and symmetrically censored least squares (SCLS) are sensitive to outliers and data contamination as we document.
Cizek, P.
core   +1 more source

Risk of Retinopathy Associated with Long‐Term Use of Hydroxychloroquine in Patients with Rheumatic Diseases: A Systematic Review and Meta‐Analysis

Arthritis Care &Research, EarlyView.
Objective We aimed to estimate the prevalence and cumulative incidence of hydroxychloroquine retinopathy (HCQ‐R) and its risk factors among patients receiving long‐term HCQ with rheumatic diseases through a systematic review and meta‐analysis of observational studies that used spectral‐domain optical coherence tomography (SD‐OCT) for screening ...
Narsis Daftarian, Chloe Yue, Steve D Levasseur, Hui Xie, J. Antonio Avina‐Zubieta   +4 more
wiley   +1 more source

Learning Gaussian Bayesian Network from Censored Data Subject to Limit of Detection by the Structural EM Algorithm

Mathematics
A Bayesian network offers powerful knowledge representations for independence, conditional independence and causal relationships among variables in a given domain. Despite its wide application, the detection limits of modern measurement technologies make
Ping-Feng Xu, Shanyi Lin, Qian-Zhen Zheng, Man-Lai Tang   +3 more
doaj   +1 more source

The Fisher Information Matrix in Right Censored Data from the Dagum Distribution [PDF]

In this note, we provide the mathematical details of the calculation of the Fisher information matrix when the data involve type I right censored observations from a Dagum distribution.Fisher information matrix, type I right censored observations, Dagum ...
Filippo Domma, Mariangela Zenga, Sabrina Giordano   +2 more
core  

Developing and Evaluating a Laboratory‐Based Frailty Index for the Prediction of Long‐Term Health Outcomes in Systemic Lupus Erythematosus

Arthritis Care &Research, EarlyView.
Objective We aimed to construct and evaluate the first laboratory‐based frailty index (FI‐Lab) for predicting adverse outcomes in systemic lupus erythematosus (SLE) and to compare its predictive ability to that of an existing clinical FI. Methods We used data from a single‐center prospective cohort of adult patients with SLE whose baseline visit ...
Grace Burns, Samuel D. Searle, Alexandra Legge   +2 more
wiley   +1 more source

A Partially Linear Censored Quantile Regression Model for Unemployment Duration [PDF]

Censored Regression Quantile (CRQ) methods provide a powerful and flexible approach for the analysis of censored survival data when standard linear models are felt to be appropriate.
Neocleous, Tereza, Portnoy, Stephen
core