Results 61 to 70 of about 7,871,149 (237)

Hölder estimates for nonlocal-diffusion equations with drifts [PDF]

, 2014
Zhen-Qing Chen, Xicheng Zhang
openalex   +1 more source

Omitting patients with no follow-up leads to bias when using inverse-intensity weighted GEEs to handle irregular and informative assessment times

BMC Medical Research Methodology
Background Longitudinal data can be used to study disease progression and are often collected at irregular intervals. When the assessment times are informative about the severity of the disease, regression analyses of the outcome trajectory over time ...
Xiawen Zhang, Anna Heath, Wei Xu, Eleanor Pullenayegum   +3 more
doaj   +1 more source

Finite Sample Hypothesis Tests for Stacked Estimating Equations [PDF]

, 2019
Eli S. Kravitz, Raymond J. Carroll, David Ruppert   +2 more
openalex   +1 more source

%QLS SAS Macro: A SAS Macro for Analysis of Correlated Data Using Quasi-Least Squares

Journal of Statistical Software, 2010
Quasi-least squares (QLS) is an alternative computational approach for estimation of the correlation parameter in the framework of generalized estimating equations (GEE). QLS overcomes some limitations of GEE that were discussed in Crowder (1995).
Han-Joo Kim, Justine Shults
doaj  

Sparse Estimation for Hamiltonian Mechanics

Mathematics
Estimating governing equations from observed time-series data is crucial for understanding dynamical systems. From the perspective of system comprehension, the demand for accurate estimation and interpretable results has been particularly emphasized ...
Yuya Note, Masahito Watanabe, Hiroaki Yoshimura, Takaharu Yaguchi, Toshiaki Omori   +4 more
doaj   +1 more source

Curvature estimates for the level sets of solutions of the Monge-Ampère equation $\det D^2 u=1$ [PDF]

, 2013
Chuanqiang Chen, Xi‐Nan Ma, Shujun Shi
openalex   +1 more source

Study of socioeconomic differences of long-term PM2.5 exposure and population mortality risk - based on 345 cities from 2000 to 2019 in China

BMC Public Health
Background Previous studies have thoroughly evaluated the association between long-term exposure to PM2.5 and mortality, but the effect of socioeconomic status on the association remains controversial.
Surong Zhao, Xingyu Zhang, Ronghang Liu, Junyan Liu, Xiaoqian Shao, Wanru Zhao, Jiu Wang, Yang Zhao, Chunlei Han   +8 more
doaj   +1 more source

Prognostic Values of Three Equations in Estimating Glomerular Filtration Rates of Patients Undergoing Off-Pump Coronary Artery Bypass Grafting

Therapeutics and Clinical Risk Management, 2020
Zhi Li,1,* Wen Ge,2,* Chunyan Han,3,* Mengwei Lv,4,5,* Yanzhong He,5 Juntao Su,6 Ban Liu,3 Yangyang Zhang5 1Department of Cardiovascular Surgery, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People ...
Li Z, Ge W, Han C, Lv M, He Y, Su J, Liu B, Zhang Y   +7 more
doaj  

Polynomial decay in $W^{2,\varepsilon}$ estimates for viscosity supersolutions of fully nonlinear elliptic equations [PDF]

, 2018
Nam Q. Le
openalex   +1 more source

Renal function estimating equations performance during pregnancy and postpartum. [PDF]

Pharmacotherapy, 2023
Zaghloul DE, Ryu R, Kestenbaum B, Smith C, Fay E, Hebert MF.   +5 more
europepmc   +1 more source