Results 41 to 50 of about 298,952 (329)

Full title: prevalence and risk factors of overweight in Beijing infants basing generalized estimating equation: a longitudinal study

BMC Public Health
Background The prevalence of childhood overweight and obesity in China has been rapidly increasing in recent years. The purposes of this study were to investigate the prevalence of infant overweight in Beijing and to explore the influencing factors using
Fang Ye, Jie Chen, Qin Hui, Die Liu, Qi Sun, Jing Liu, Qi Zhang   +6 more
doaj   +1 more source

Assessing the Use of GEE Methods for Analyzing Continuous Outcomes from Family Studies: Strong Heart Family Study

Epidemiology, Biostatistics and Public Health, 2023
Background: Because of its convenience and robustness, the generalized estimating equations (GEE) method has been commonly used to fit marginal models of continuous outcomes in family studies.
Xi Chen, Ying Zhang, Amanda M. Fretts, Tauqeer Ali, Jason G. Umans, Richard B. Devereux, Elisa T. Lee, Shelley A. Cole, Yan D. Zhao   +8 more
doaj   +1 more source

Semiparametric Multivariate Accelerated Failure Time Model with Generalized Estimating Equations

, 2012
The semiparametric accelerated failure time model is not as widely used as the Cox relative risk model mainly due to computational difficulties. Recent developments in least squares estimation and induced smoothing estimating equations provide promising ...
A Komárek, A Qu, AA Tsiatis, BM Brown, BM Brown, CF Spiekerman, D Zeng, DR Cox, EA Gehan, EW Lee, H Li, J Buckley, J Yan, JM Robins, Jun Yan, Junghi Kim, K-Y Liang, K-Y Liang, L Yu, L Yu, LM Johnson, M Zhou, M-C Wang, P Novák, RL Prentice, RL Strawderman, Sangwook Kang, Sy Han Chiou, TL Lai, U Halekoh, W Stute, W Stute, WJ Huster, X Luo, Y Huang, Y Ritov, Y-G Wang, Z Jin, Z Jin, Z Jin, Z Ying   +40 more
core   +1 more source

Calculation of LTC Premiums based on direct estimates of transition probabilities [PDF]

, 2004
In this paper we model the life-history of LTC patients using a Markovian multi-state model in order to calculate premiums for a given LTC-plan. Instead of estimating the transition intensities in this model we use the approach suggested by Andersen et ...
Czado, Claudia, Gschlößl, Susanne, Helms, F.   +2 more
core   +2 more sources

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Estimation of multivariate probit models: A mixed generalized estimating/pseudo-score equations approach and some finite sample results [PDF]

, 1996
In the present paper a mixed approach is proposed for the simultaneously estimation of regression and correlation structure parameters in multivariate probit models using generalized estimating equations for the former and pseudo-score equations for the ...
Hamerle, Alfred, Spiess, M.
core   +1 more source

Circulating tumor DNA (ctDNA) trajectories predict survival in trifluridine/tipiracil‐treated metastatic colorectal cancer patients

Molecular Oncology, EarlyView.
The authors applied joint/mixed models that predict mortality of trifluridine/tipiracil‐treated metastatic colorectal cancer patients based on circulating tumor DNA (ctDNA) trajectories. Patients at high risk of death could be spared aggressive therapy with the prospect of a higher quality of life in their remaining lifetime, whereas patients with a ...
Matthias Unseld, Stefan Kühberger, Ricarda Graf, Christine Beichler, Markus Braun, Nadia Dandachi, Ellen Heitzer, Gerald W. Prager   +7 more
wiley   +1 more source

A large‐scale retrospective study in metastatic breast cancer patients using circulating tumour DNA and machine learning to predict treatment outcome and progression‐free survival

Molecular Oncology, EarlyView.
There is an unmet need in metastatic breast cancer patients to monitor therapy response in real time. In this study, we show how a noninvasive and affordable strategy based on sequencing of plasma samples with longitudinal tracking of tumour fraction paired with a statistical model provides valuable information on treatment response in advance of the ...
Emma J. Beddowes, Mario Ortega Duran, Solon Karapanagiotis, Alistair Martin, Meiling Gao, Riccardo Masina, Ramona Woitek, James Tanner, Fleur Tippin, Justine Kane, Jonathan Lay, Anja Brouwer, Stephen‐John Sammut, Suet‐Feung Chin, Davina Gale, Dana W. Y. Tsui, Sarah‐Jane Dawson, Nitzan Rosenfeld, Maurizio Callari, Oscar M. Rueda, Carlos Caldas   +20 more
wiley   +1 more source

Efficiency evaluation of quadratic inference functions in the analysis of longitudinal medical data

Russian Open Medical Journal, 2018
Background ― In medical research, longitudinal studies have important and functional roles. Generalized estimating equation (GEE) is used for the analysis of longitudinal and correlated data required to determine the correlation structure among responses.
Jamshid Yazdani-Charati, Maryam Tatari, Hamed Rouhanizade   +2 more
doaj   +1 more source

Moderate Deviations of Generalized Method of Moments and Empirical Likelihood Estimators [PDF]

, 2011
This paper studies moderate deviation behaviors of the generalized method of moments and generalized empirical likelihood estimators for generalized estimating equations, where the number of equations can be larger than the number of unknown parameters ...
Otsu, Taisuke
core   +2 more sources