# Tagged Questions

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### Alpha adjustment for main and interaction effects in multiple factorial ANOVAs

let's say that I performed 10 2x2 factorial ANOVAs. In total I get 30 effects (two main effects and one interaction for each ANOVA). When adjusting the alpha level for multiple comparisons, should I ...
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### Adjust p-values for variance inflation factors

I'm fitting linear mixed models and I have slightly inflated p-values due to multicollinearity. I deleted the factors with the highest VIFs until none of them was larger than 3. The VIFs tell me, ...
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### Adjustment to Sensitivity & Specificity

Good Day All, I am trying to measure sensitivity and specificity of a new test in the face of an 'imperfect' gold standard. It turns out that the literature has known Sensitivity and specificity ...
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### Should a non-significant adjustment variable be kept in a regression model? [duplicate]

I'm working with a structural equation model to study influenza infection risk. As age is a known risk factor to explain infection, I therefore adjusted my infection outcome on the subjects age class. ...
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### How can i interpret/summarise the following ANOVA table for BIBD?

 \begin{array}{lcccll} \text{Sources of variation} & \text{Sum of Square} & \text{Degrees of Freedom} & \text{Mean Square} &F_o &p-\text{value} \\ \hline ...
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### Correcting for multiple comparisons on planned contrasts with an ANCOVA

I have done an experiment with 7 treatment conditions designed to reduce alcohol intake, and a control condition. The dependent variable is alcohol intake after treatment, and I have run an ANCOVA ...
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### Relative efficiency of matching versus adjustment to handle confounding effects in highly disproportionate populations

I am reviewing a paper where the authors compare cancer outcomes (binary) between two groups, one having a small sample size of 200 and the other having over 55,000. The authors then claim that, due ...
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### Does adjustement completely remove the effect of the confounding variables?

This might seem a silly question but I am really confused about it. In theory adjusting for a confounder variable should remove its effect. Is this always true? and does this mean that the effect of ...
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### Statistical Approach to restricting predictions between 0 and 1

I am working with tobacco prevalence data where I am smoking rates at the country level. I and am in the process of adjusting estimates across different frequencies of use(ie, daily versus occasional ...
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### How to make adjustment for correlation coefficient?

Suppose that there are two two-dimensional maps. For simplification, let's say one map is the temperatures in the 48 continental U. S. states, and the other map is the corresponding humidities. The ...