Results 31 to 40 of about 2,996,820 (336)

Correspondence Analysis of Longitudinal Data [PDF]

open access: yes, 2005
Correspondence analysis is an exploratory tool for the analysis of associations between categorical variables, the results of which may be displayed graphically. For longitudinal data two types of analysis can be distinguished: the first focusses on transitions, whereas the second investigates trends.
De Rooij, M., Van der Heijden, P.G.M.
openaire   +4 more sources

追蹤資料分析中隨時間變動解釋變項平減之研究 Centering on the Time-Varying Independent Variables in Longitudinal Data Analysis

open access: yesJournal of Research in Education Sciences, 2015
利用多層次模式或是階層線性模式進行重複觀測資料的分析,如果個體層次解釋變項包含隨時間變動解釋變項時,在個體層次方程式對它不平減或是總平減所獲得的迴歸係數是一個偏誤的結果,因為這個隨時間變動的解釋變項具有追蹤與橫斷面的資料特性,對個體層次結果變項的影響可以拆解為互斥的組間迴歸係數與組內迴歸係數,因此,必須利用組平減並將組平均數置回截距項方程式方能獲得正確的估計結果。但在不平減、總平減與組平減三種方法下都加上組平均數置回截距項方程式,在隨機截距模型下則會獲得等價的估計結果 ...
溫福星 Fur-Hsing Wen
doaj   +1 more source

Measures of Violence within the United Kingdom Household Longitudinal Survey and the Crime Survey for England and Wales: An Empirical Assessment

open access: yesSocial Sciences, 2023
Criminology has been hampered by a lack of longitudinal data to examine the consequences of victimisation. However, recently, ‘Understanding Society’, the United Kingdom Household Panel Survey (UKHLS), began fielding a small battery of questions relating
Niels Blom, Vanessa Gash
doaj   +1 more source

Understanding the impact of fertility history on health outcomes in later life.

open access: yesInternational Journal of Population Data Science, 2022
Objectives Aims of this research, involving data linkage and health outcomes, is to gain a full understanding of the impact of both fertility histories and childlessness on health outcomes mid-life accounting for socio-economic background and area of ...
Lee Williamson, Chris Dibben
doaj   +1 more source

Regression Trees for Longitudinal Data [PDF]

open access: yes, 2013
While studying response trajectory, often the population of interest may be diverse enough to exist distinct subgroups within it and the longitudinal change in response may not be uniform in these subgroups.
Harezlak, Jaroslaw, Kundu, Madan Gopal
core   +3 more sources

Identifying progressive imaging genetic patterns via multi-task sparse canonical correlation analysis: a longitudinal study of the ADNI cohort [PDF]

open access: yes, 2019
Motivation Identifying the genetic basis of the brain structure, function and disorder by using the imaging quantitative traits (QTs) as endophenotypes is an important task in brain science.
Du, Lei   +7 more
core   +1 more source

Co-development and Adoption of Transparency in Data Access Standards: Process, Implementation, and Impact

open access: yesInternational Journal of Population Data Science
Objectives This initiative aimed to enhance transparency in health data access processes by co-developing and implementing clear standards. The goal was to improve public trust and understanding, streamline governance, and promote meaningful public ...
Ester Bellavia   +5 more
doaj   +1 more source

Functional single index models for longitudinal data

open access: yes, 2011
A new single-index model that reflects the time-dynamic effects of the single index is proposed for longitudinal and functional response data, possibly measured with errors, for both longitudinal and time-invariant covariates.
Jiang, Ci-Ren, Wang, Jane-Ling
core   +1 more source

Embedding Public Voices in Data Governance: Insights from the GUARDS Principles Consultation

open access: yesInternational Journal of Population Data Science
Objectives This project explored public perspectives on the GUARDS Principles, an overarching governance framework for the population data research community, which builds on existing good practice guidance.
Ester Bellavia   +5 more
doaj   +1 more source

An approach for jointly modeling multivariate longitudinal measurements and discrete time-to-event data

open access: yes, 2010
In many medical studies, patients are followed longitudinally and interest is on assessing the relationship between longitudinal measurements and time to an event.
Albert, Paul S., Shih, Joanna H.
core   +1 more source

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