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The Effect of Noninvariance on the Estimation of the Mediated Effect in the Two-Wave Mediation Model

Structural Equation Modeling: A Multidisciplinary Journal, 2022
The two-wave mediation model is the most suitable model for examining mediation effects in a randomized intervention and includes measures taken at pretest and posttest. When using self-report measures, the meaning of responses may change for the treatment group over the course of the intervention and result in noninvariance across groups at posttest ...
A. R. Georgeson, Matthew J. Valente, Oscar Gonzalez   +2 more
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Estimation of the mediation effect with a binary mediator

Statistics in Medicine, 2006
AbstractA mediator acts as a third variable in the causal pathway between a risk factor and an outcome. In this paper, we consider the estimation of the mediation effect when the mediator is a binary variable. We give a precise definition of the mediation effect and examine asymptotic properties of five different estimators of the mediation effect. Our
Yan, Li, Julie A, Schneider, David A, Bennett   +2 more
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Acetate‐Mediated Effects of Ethanol

Alcoholism: Clinical and Experimental Research, 1994
Ethanol has been shown to increase markedly portal blood flow, primarily by increasing intestinal blood flow. This effect of ethanol is reproduced by acetate, infused at rates equivalent to those leading to endogenous acetate production following ethanol administration.
Y, Israel, H, Orrego, F J, Carmichael
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Direction of effects in mediation analysis.

Psychological Methods, 2015
Data collected in the social sciences are rarely normally distributed. The linear regression methods that are usually employed to test mediation hypotheses consider moments no higher than second order. Recently discussed methods of direction dependence do consider higher moments.
Wiedermann, Wolfgang, Von Eye, Alexander
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Immunity: Plants as Effective Mediators

Critical Reviews in Food Science and Nutrition, 2014
In the domain of nutrition, exploring the diet-health linkages is major area of research. The outcomes of such interventions led to widespread acceptance of functional and nutraceutical foods; however, augmenting immunity is a major concern of dietary regimens.
M Tauseef, Sultan, Masood Sadiq, Butt, Mir M Nasir, Qayyum, Hafiz Ansar Rasul, Suleria   +3 more
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