Zobrazeno 1 - 10
of 471
pro vyhledávání: '"time-varying covariate"'
Publikováno v:
Mathematics, Vol 12, Iss 18, p 2903 (2024)
The classical Cox model is the most popular procedure for studying right-censored data in survival analysis. However, it is based on the fundamental assumption of proportional hazards (PH). Modified Cox models, stratified and extended, have been wide
Externí odkaz:
https://doaj.org/article/c1f19abd15cb47a999abb02fbeea9ab4
Autor:
James M. Meza, MD, MSc, Eugene H. Blackstone, MD, Madison B. Argo, MD, Lucy Thuita, MS, Ashley Lowry, MS, MEd, Jeevanantham Rajeswaran, PhD, Anusha Jegatheeswaran, MD, PhD, Christopher A. Caldarone, MD, James K. Kirklin, MD, William M. DeCampli, MD, PhD, Kamal Pourmoghadam, MD, Peter J. Gruber, MD, PhD, Brian W. McCrindle, MD, MPH
Publikováno v:
JTCVS Open, Vol 14, Iss , Pp 426-440 (2023)
Objective: Post-Norwood mortality remains high and unpredictable. Current models for mortality do not incorporate interstage events. We sought to determine the association of time-related interstage events, along with (pre)operative characteristics,
Externí odkaz:
https://doaj.org/article/d76dd78d1cfc49d9ac087a0fc44de549
Autor:
Nurgul Batyrbekova, Hannah Bower, Paul W. Dickman, Anna Ravn Landtblom, Malin Hultcrantz, Robert Szulkin, Paul C. Lambert, Therese M-L. Andersson
Publikováno v:
BMC Medical Research Methodology, Vol 22, Iss 1, Pp 1-12 (2022)
Abstract Background There are situations when we need to model multiple time-scales in survival analysis. A usual approach in this setting would involve fitting Cox or Poisson models to a time-split dataset. However, this leads to large datasets and
Externí odkaz:
https://doaj.org/article/54b32c2833434df191097c4605e3da19
Akademický článek
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Publikováno v:
BMC Medical Research Methodology, Vol 21, Iss 1, Pp 1-19 (2021)
Abstract Background In follow-up studies, the occurrence of the intermediate event may influence the risk of the outcome of interest. Existing methods estimate the effect of the intermediate event by including a time-varying covariate in the outcome
Externí odkaz:
https://doaj.org/article/5ba787e1fbd64c2d954da9444bc6405c
Autor:
Hongbin Zhang
Publikováno v:
Mathematics, Vol 11, Iss 10, p 2317 (2023)
We study a joint model where logistic regression is applied to binary longitudinal data with a mismeasured time-varying covariate that is modeled using a mechanistic nonlinear model. Multiple random effects are necessary to characterize the trajector
Externí odkaz:
https://doaj.org/article/3d18637bc57846f08a98405b2844b033
Publikováno v:
BMC Medical Research Methodology, Vol 20, Iss 1, Pp 1-11 (2020)
Abstract Background In the presence of dependent censoring even after stratification of baseline covariates, the Kaplan–Meier estimator provides an inconsistent estimate of risk. To account for dependent censoring, time-varying covariates can be us
Externí odkaz:
https://doaj.org/article/95d60d3da5e4423389701d26d3653f3d
Publikováno v:
BMC Medical Research Methodology, Vol 19, Iss 1, Pp 1-13 (2019)
Abstract Background The recent progress in medical research generates an increasing interest in the use of longitudinal biomarkers for characterizing the occurrence of an outcome. The present work is motivated by a study, where the objective was to e
Externí odkaz:
https://doaj.org/article/6143077b51de43b0bfd52ee425ebe9bb
Autor:
Hori, Kazuki
Educational researchers are often interested in phenomena that unfold over time within a person and at the same time, relationships between their characteristics that are stable over time. Since variables in a longitudinal study reflect both within-
Externí odkaz:
http://hdl.handle.net/10919/103624
Akademický článek
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