نتایج جستجو برای: mediation effect

تعداد نتایج: 1656401  

Journal: :Statistics in medicine 2014
Dylan S Small Marshall M Joffe Kevin G Lynch Jason A Roy A Russell Localio

Tom Ten Have made many contributions to causal inference and biostatistics before his untimely death. This paper reviews Tom's contributions and discusses potential related future research directions. We focus on Tom's contributions to longitudinal/repeated measures categorical data analysis and particularly his contributions to causal inference. Tom's work on causal inference was primarily in ...

2016
Syudo Yamasaki Shuntaro Ando Shinsuke Koike Satoshi Usami Kaori Endo Paul French Tsukasa Sasaki Toshi A. Furukawa Mariko Hasegawa-Hiraiwa Kiyoto Kasai Atsushi Nishida

Peer victimization increases the risk of experiencing psychotic symptoms among clinical and general populations, but the mechanism underlying this association remains unclear. Dissociation, which is related to peer victimization and hallucinatory experiences, has been demonstrated as a significant mediator in the relation between childhood victimization and hallucinatory experience among adult ...

2014
Andrew B. Holder Marianito R. Rodrigo

The acid-mediation hypothesis, that is, the hypothesis that acid produced by tumours, as a result of aerobic glycolysis, provides a mechanism for invasion, has so far been considered as a relatively closed system. The focus has mainly been on the dynamics of the tumour, normaltissue, acid and possibly some other bodily components, without considering the effect of an external intervention such ...

2017
Or Shkoler Aharon Tziner

The current research (Figure 1) examined the antecedents of work misbehaviors (WMBs) by means of organizational justice perceptions (as a predictor), experienced burnout (as a mediator), and emotional intelligence (as a buffer). A heterogeneous sample of 243 employees was acquired in order to assess correlative associations between the variables, a mediation effect, and two moderation effects. ...

2017
Kelly K. Ferguson Yin-Hsiu Chen Tyler J. VanderWeele Thomas F. McElrath John D. Meeker Bhramar Mukherjee

BACKGROUND Mediation analysis is useful for understanding mechanisms and has been used minimally in the study of the environment and disease. OBJECTIVE We examined mediation of the association between phthalate exposure during pregnancy and preterm birth by oxidative stress. METHODS This nested case-control study of preterm birth (n = 130 cases, 352 controls) included women who delivered in...

Journal: :International journal of epidemiology 2013
Lorenzo Richiardi Rino Bellocco Daniela Zugna

In epidemiological studies it is often necessary to disentangle the pathways that link an exposure to an outcome. Typically the aim is to identify the total effect of the exposure on the outcome, the effect of the exposure that acts through a given set of mediators of interest (indirect effect) and the effect of the exposure unexplained by those same mediators (direct effect). The traditional a...

2005
David J. Chatting Jeremy M. Thorne

This paper describes our position in relation to issues of ‘faces as content’; content that really ‘matters’ to people. Faces convey so much, yet mediation can disrupt these subtle signals. We discuss the social, identity and emotional judgements made of the face and then consider the often-disruptive effect of mediation on these signals. Finally, we describe how faces should be mediated smartl...

Journal: :Psychological medicine 2010
J F Wiborg H Knoop M Stulemeijer J B Prins G Bleijenberg

BACKGROUND Cognitive behaviour therapy (CBT) is known to reduce fatigue severity in chronic fatigue syndrome (CFS). How this change in symptomatology is accomplished is not yet understood. The purpose of the present study was to determine whether the effect of CBT on fatigue is mediated by an increase in physical activity. METHOD Three randomized controlled trials were reanalysed, previously ...

Journal: :Social science & medicine 2015
Claudia Sikorski Melanie Luppa Matthias C Angermeyer Georg Schomerus Bruce Link Steffi G Riedel-Heller

The desire for social distance towards individuals with obesity as part of the stigmatization process has not been investigated. The aims of this study include: (a) determining the prevalence of social distance and its domains in a population-based sample; (b) reporting levels of emotional response; and (c) investigating the association of BMI, emotional response and social distance. The data w...

2014
Manuel Ato García Guillermo Vallejo Ester Ato Lozano

Resumen Background: Although there is a broad consensus on the use of statistical procedures for mediation analysis in psychological research, the interpretation of the effect of mediation is highly controversial because of the potential violation of the assumptions required in application, most of which are ignored in practice. Method: This paper summarises two currently independent procedures...

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