Results 81 to 90 of about 25,812,240 (142)

AN ADAPTIVE COMPOSITE QUANTILE APPROACH TO DIMENSION REDUCTION [PDF]

, 2014
Sufficient dimension reduction [Li 1991] has long been a prominent issue in multivariate nonparametric regression analysis. To uncover the central dimension reduction space, we propose in this paper an adaptive composite quantile approach.
Kong, Efang
core   +1 more source

A two-stage productivity analysis using bootstrapped Malmquist index and quantile regression [PDF]

This paper examines the effects of farm characteristics and government policies in enhancing productivity growth for a sample of Greek farms, using a two-stage procedure.
Nitsi, Elisavet I., Kaditi, Eleni A.
core  

Sex-specific associations between the developmental alterations in the pituitary-thyroid hormone axis and thyroid nodules in Chinese euthyroid adults: a community-based cross−sectional study

Frontiers in Endocrinology
BackgroundPrevious studies have revealed the sex-specific features of pituitary–thyroid hormone (TH) actions and the prevalence of thyroid nodules (TNs) in children and adolescents. However, it was unclear in adults.
Ying Li, Genfeng Yu, Nanfang Yao, Nanfang Yao, Siyang Liu, Dongmei Wang, Qintao Ma, Lan Liu, Heng Wan, Jie Shen   +9 more
doaj   +1 more source

The association between circulating saturated fatty acids and thyroid function: results from the NHANES 2011−2012

Frontiers in Endocrinology
BackgroundExcessive saturated fatty acids (SFAs) are known to be detrimental to human health. Although the majority of research and dietary guidelines have focused on the intake of SFAs, there has been limited attention to the relationship between ...
Wei Zhao, Xinnan Peng, Yazhuo Liu, Shen Li, Xinyu Li, Zhengnan Gao, Cheng Han, Zizhao Zhu   +7 more
doaj   +1 more source

TWO-STAGE QUANTILE REGRESSION WHEN THE FIRST STAGE IS BASED ON QUANTILE REGRESSION [PDF]

We present the asymptotic properties of double-stage quantile regression estimators with random regressors, where the first stage is based on quantile regressions with the same quantile as in the second stage, which ensures robustness of the estimation ...
Tae-Hwan Kim, Christophe Muller
core  

Impaired Sensitivity to Thyroid Hormones is Associated with the Risk of Diabetic Nephropathy in Euthyroid Patients with Type 1 Diabetes Mellitus

Diabetes, Metabolic Syndrome and Obesity
Chunxia Shi,1– 3,* Xiaoning Liu,4,* Zouxi Du,2,3,5 Limin Tian2,3 1School of Medicine, Jiangsu University, Zhenjiang, People’s Republic of China; 2Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, People’s Republic of China ...
Shi C, Liu X, Du Z, Tian L
doaj  

Poster Sessions

HemaSphere, Volume 9, Issue S1, June 2025.
wiley   +1 more source

Visualizing Multiple Quantile Plots [PDF]

Multiple quantile plots provide a powerful graphical method for comparing the distributions of two or more populations. This paper develops a method of visualizing triple quantile plots and their associated confidence tubes, thus extending the notion of ...
Einmahl, J.H.J., McKeague, I.W., Boon, M.   +2 more
core  

Nonparametric estimation of an additive quantile regression model [PDF]

This paper is concerned with estimating the additive components of a nonparametric additive quantile regression model. We develop an estimator that is asymptotically normally distributed with a rate of convergence in probability of n-r/(2r+1) when the ...
Sokbae 'Simon' Lee, Joel Horowitz
core  

Poster Session 1

Pregnancy, Volume 1, Issue S1, January 2025.
wiley   +1 more source