Results 91 to 100 of about 540,575 (323)

Is Adding More Indicators to a Latent Class Analysis Beneficial or Detrimental? Results of a Monte-Carlo Study

Frontiers in Psychology, 2014
The purpose of this study was to examine in which way adding more indicators or a covariate influences the performance of latent class analysis (LCA). We varied the sample size (100 ≤ N ≤ 2,000), number and quality of binary indicators (between 4 and 12
Ingrid Carlson Wurpts, Christian eGeiser
doaj   +1 more source

Asymptotic theory for the Cox model with missing time-dependent covariate

, 2006
The relationship between a time-dependent covariate and survival times is usually evaluated via the Cox model. Time-dependent covariates are generally available as longitudinal data collected regularly during the course of the study.
Dupuy, Jean-François, Grama, Ion, Mesbah, Mounir   +2 more
core   +2 more sources

Risk of Hepatotoxicity in Patients With Gout Treated With Febuxostat or Benzbromarone: A Propensity Score–Matched Cohort Study

Arthritis Care &Research, EarlyView.
Objective The objective of this study was to evaluate and compare the risk of hepatotoxicity associated with the use of febuxostat and benzbromarone in patients with gout. Methods New users of febuxostat or benzbromarone with monitoring of liver function at least three times in a year after initiation of the study drugs were identified from an ...
Wenyan Sun, Lingling Cui, Robert Terkeltaub, Ying Chen, Xinde Li, Xiaoyu Cheng, Tian Liu, Nicola Dalbeth, Changgui Li   +8 more
wiley   +1 more source

Retrotransposon Expression Is Upregulated in Adulthood and Suppressed during Regeneration of the Limb in the Axolotl (Ambystoma mexicanum)

Advanced Biology, EarlyView.
The axolotl's remarkable regenerative abilities decline with age, the causes may include the numerous repetitive elements within its genome. This study uncovers how Ty3 retrotransposons and coexpression networks involving muscle and immune pathways respond to aging and regeneration, suggesting that transposons respond to physiological shifts and may ...
Samuel Ruiz‐Pérez, Nicolás Alcaraz, Karla Torres‐Arciga, José Antonio Ocampo‐Cervantes, Alejandra Cervera, Clementina Castro‐Hernández, Cynthia Gabriela Sámano‐Salazar, Ernesto Soto‐Reyes, Rodrigo González‐Barrios   +8 more
wiley   +1 more source

Nonparametric Covariate Adjustment for Receiver Operating Characteristic Curves

, 2009
The accuracy of a diagnostic test is typically characterised using the receiver operating characteristic (ROC) curve. Summarising indexes such as the area under the ROC curve (AUC) are used to compare different tests as well as to measure the difference ...
Aoki, Begg, Brumback, Cai, Cai, Cantoni, Delong, Dodd, Efron, Fan, Faraggi, Faraggi, Guttman, Hall, Hall, Hanley, Horng, Hsiao, Mack, Metz, Molodianovitch, Obuchowski, Otto, Pepe, Pepe, Pepe, Ratkowsky, Reiser, Schisterman, Stover, Swets, Thompson, Toledano, Tosteson, Youden, Young, Zhou   +36 more
core   +1 more source

Altered Brain‐Behavior Association During Resting State is a Potential Psychosis Risk Marker

Advanced Science, EarlyView.
The study detects a potential multimodal biomarker that can be promising for identifying early markers of psychosis. It shows a consistent brain‐behavior association between a circuit of interconnected regions and executive function in neurotypical controls and individuals at various stages of psychosis.
Leonardo Fazio, Giuseppe Stolfa, Roberta Passiatore, Angelantonio Tavella, Giuseppe Blasi, Madalina O. Buciuman, Aaron L. Goldman, Shalaila S. Haas, Lana Kambeitz‐Ilankovic, Nikolaos Koutsouleris, Monica Nicoli, Teresa Popolizio, Antonio Rampino, Anne Ruef, Fabio Sambataro, Pierluigi Selvaggi, William Ulrich, Daniel R. Weinberger, Apulian Network on Risk for Psychosis, PRONIA Consortium, Alessandro Bertolino, Linda A. Antonucci, Giulio Pergola   +22 more
wiley   +1 more source

Development and Validation of Machine Learning‐Based Marker for Early Detection and Prognosis Stratification of Nonalcoholic Fatty Liver Disease

Advanced Science, EarlyView.
This study constructs a stacked multimodal machine learning model for nonalcoholic fattly liver disease (NAFLD) by integrating genetic and clinical features, and synthesize an in‐silico quantitative marker (ISNLD) that enables personalized risk stratification for intrahepatic and extrahepatic outcomes of high‐risk individuals of NAFLD.
Lushan Xiao, Lin Zeng, Jiaren Wang, Chang Hong, Ziyong Zhang, Chengkai Wu, Hao Cui, Yan Li, Ruining Li, Shengxing Liang, Qijie Deng, Wenyuan Li, Xuejing Zou, Pengcheng Ma, Li Liu   +14 more
wiley   +1 more source

The Non‐Coding Regulatory Variant rs2863002 at chr11p11.2 Increases Neuroblastoma Risk by Affecting HSD17B12 Expression and Lipid Metabolism

Advanced Science, EarlyView.
The SNP rs2863002 at the 11p11.2 locus, identified through GWAS, is associated with an increased risk of neuroblastoma. The rs2863002‐C allele impairs the binding of the transcription factor GATA3, resulting in upregulation of the HSD17B12 gene.
Teresa Maiorino, Marianna Avitabile, Vincenzo Aievola, Annalaura Montella, Vito A. Lasorsa, Ferdinando Bonfiglio, Mariagrazia Cantalupo, Sueva Cantalupo, Gilda Estinto, Matilde Tirelli, Martina Morini, Martina Ardito, Alessandra Eva, Vincenza Cerbone, Lucia Mauriello, Marianna Caterino, Margherita Ruoppolo, John M. Maris, Sharon J. Diskin, Achille Iolascon, Mario Capasso   +20 more
wiley   +1 more source

Covariate Shift Adaptation for Structured Regression With Frank–Wolfe Algorithms

IEEE Access, 2019
This paper concerns structured regression problems wherein the issue of covariate shift is addressed, which aims at reducing the discrepancy in training and test data distributions, using computationally efficient and sparse optimization principles.
Santosh V. Chapaneri, Deepak J. Jayaswal
doaj   +1 more source

Regression modeling on stratified data with the lasso

, 2016
We consider the estimation of regression models on strata defined using a categorical covariate, in order to identify interactions between this categorical covariate and the other predictors.
Ollier, Edouard, Viallon, Vivian
core   +2 more sources