Questions tagged [interaction]
A situation where the effect of an explanatory variable may depend on the value of another explanatory variable.
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Is it necessary to transform the tide variable using a truncated Fourier series for GLM (Gamma), and how should I interpret interactions? [closed]
I’m using glm to see whether there is an association between zooplankton biomass (response) with two variables: 1) hours from high tide (high tide is zero, hours before are negative at one hourly ...
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Cox regression baseline risk and interpretation of coefficients
I recently encountered a problem with Cox regression that I couldn't find an answer to (please direct me to the appropriate resources if you know of any). So the problem goes as follows:
I have a ...
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Moderated Mediation in a "Two-Step" Structural Equation Model
Can someone please help me figure out how to include a moderator in the structural equation model (SEM) below?
It's a "two-step" model in the sense that there are two causal linkages, one ...
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What methods to use in pre and post testing?
I am currently running a pre- and post-intervention study. My hypotheses are if the intervention has an effect and if personality traits moderate the effect of the intervention.
I have an initial ...
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How to estimate the CI of RERI [closed]
This thread is involved in statistical tech to measure interactions. The RERI is short for "relative excess risk due to interaction". I know it's quite a bit difficult to understand but, to ...
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Which statistical test would you recommend for this experimental design?
I measured the percentage of individuals that crossed an averisve barrier at six different time points for four different genotypes.
The barrier is made out of an aversive substance that the control ...
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Modeling Condition Specific Associations
I am trying to model a crossover repeated measures design in which individuals complete both the active and control conditions. These individuals also complete cognitive testing before and after both ...
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swapping DV and IV in the presence of an interaction
I'm hoping someone could help with a problem that I'm sure has a simple explanation. I have conducted a visual test on 2 groups of people 1) healthy controls 2) patients (with a vision problem) using ...
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Measuring treatment heterogeneity
This follows on a first question posted here
I am looking at the effect of information on local prices and choices to move to certain cities. I think that this information will have a positive effect ...
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Interpreting interaction term
Suppose I am interested in estimating the effect of a treatment (vs a control), fully and conditional on different levels (say, 3) of a baseline caracteristic (say, income level). I would have a ...
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Recommendations for performing intersectional analysis of medical vulnerability using composite household service indicators
I am working on a dataset to analyze the intersectional vulnerability in medical access due to socioeconomic factors. Specifically, I have created a composite household service indicator that sums up ...
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Addition of regression coefficients in Linear Probability Models?
I'm reading this paper
Sangyoon Park (2018) Coeducation, academic performance, and subject choice: evidence from quasi-random classroom assignments, Education Economics, 26:6, 574-592, DOI: 10.1080/...
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Testing the effect of a continious IV on DV, in order to explain group differences
I would like to ask a question regarding an analysis I’m planning and it might be a basic question so, apologies in advane.... To describe the situation: There are two groups of participants in my ...
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A causal path problem of prediction models
I am doing a study on predicting the 10-year risk of diabetes in people without diabetes using factors such as glucose, HbA1c, and triglycerides. The blood sampling time is not limited to fasting. In ...
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Interpretation of main effects under the presence of interaction terms in fixed-effect models and using plot_predictions
I would like to ask about the following.
I am working with a T=2 panel data, and assuming a model of X1, X2, and X1*X2 estimated with the within estimator, which one would be the more appropriate ...
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