نتایج جستجو برای: longitudinal study

تعداد نتایج: 4025281  

2016
Giuseppe Nicola Giordano Martin Lindström

BACKGROUND Social capital research has consistently shown positive associations between generalised trust and health outcomes over 2 decades. Longitudinal studies attempting to test causal relationships further support the theory that trust is an independent predictor of health. However, as the reverse causality hypothesis has yet to be empirically tested, a knowledge gap remains. The aim of th...

2008
Katherine L. Dix

....................................................................................................... XVIII DECLARATION OF AUTHENTICITY .................................................................... XX ACKNOWLEDGEMENTS ..................................................................................... XXI 1. INTRODUCTION ..................................................................

2005
Richard M. Felder Gary N. Felder Jacquelin Dietz

In a longitudinal study at North Carolina State University, a cohort of students took five chemical engineering courses taught by the same instructor in five consecutive semesters. The course instruction made extensive use of active and cooperative learning and a variety of other techniques designed to address a broad spectrum of learning styles. Previous reports on the study summarized the ins...

2015
Susanne Kristen-Antonow Beate Sodian Hannah Perst Maria Licata

The aim of this study was to investigate if children's early responsiveness toward social partners is developmentally related to their growing concept of self, as reflected in their mirror self-recognition (MSR) and delayed self-recognition (DSR). Thus, a longitudinal study assessed infants' responsiveness (e.g., smiling, gaze) toward social partners during the still-face (SF) task and a social...

M.G Gorla R Kumar, R Vohra,

The present study is concerned with the variational principle and plane wave propagation in double porous thermoelastic infinite medium. Lord-Shulman theory [2] of thermoelasticity with one relaxation time has been used to investigate the problem. It is found that for two dimensional model, there exists four coupled longitudinal waves namely longitudinal wave (P), longitudinal thermal wave (T),...

2013
Maja O’Connor

Complicated grief reactions are relatively common following spousal bereavement. Old age spousal loss qualifies as a possible traumatic stressor, however, PTSD as a possible complication of the loss has rarely been explored in this population. This study aimed to investigate the frequency of PTSD in elderly bereaved people across the first 18 months of bereavement. Additionally, risk factors fo...

Background: In many clinical trials and medical studies, the survival and longitudinal data are collected simultaneously. When these two outcomes are measured from each subject and the survival variable depends on a longitudinal biomarker, using joint modelling of survival and longitudinal outcomes is a proper choice for analyzing the available data. Methods: In this retrospective archiv...

Journal: :journal of biostatistics and epidemiology 0
habibollah esmaily department of biostatistics, health sciences research center mashhad university of medical sciences, mashhad, khorasan razavi, iran fatemeh salmani department of biostatistics, school of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran mohammadreza meshkani department of statistics, school of mathematics sciences, shahid beheshti university, tehran, iran anoushirvan kazemnejad department of biostatistics, medical sciences, tarbiat modares university, tehran, iran nasserreza arghami department of statistics, school of mathematics sciences, ferdowsi university, mashhad, khorasan razavi, iran

longitudinal  study  plays  an  important  role  in  the  epidemiological,  clinical,  and  social  science studies. in these kinds of studies, every individual is observed frequently during a period of time. the statistical analysis of longitudinal presents special opportunities  and challenges. the repeated outcomes for one individual tend to be correlated among themselves also one of the pro...

جابری, محمد , رحیم پور سلیمانی, حمید , فرهبد, امیر حسین,

 The structure of longitudinal modes of a passively Q-switched, non-planar unidirectional ring-resonator,with Nd:YAG active medium is described in this article. Two different techniques are used to study the longitudinal mode structure of the laser resonator. At first, the fast-fourier transform technique is applied for analyzing the mode beating of the optical fields by intensity frequency str...

2017
David M. Wright Michael Rosato Dermot O’Reilly

Heterogamous marriages, in which partners have dissimilar attributes (e.g. by socio-economic status or ethnicity), are often at elevated risk of dissolution. We investigated the influences of heterogamy by religion and area of residence on risk of marital dissolution in Northern Ireland, a country with a history of conflict and residential segregation along Catholic-Protestant lines. We expecte...

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