All Questions
Tagged with multiple-comparisons r
240
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Impact of variation in the total number of samples when performing multiple fisher exact tests
I have dataset of 2 time points. In each time point I have to compare the counts of different components at each position (number of positions =1000). I used fisher exact test to compare the if there ...
- 309
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46
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Steps to conduct a linear mixed model and post-hoc comparison test
I would like to ask for your help with the best way to analyze the following experiment within R.
Here is my design: there are 15 treatments, in four blocks. For each treatment, in each block, we have ...
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12
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Post-hoc tests for repeated measures ANOVA with aligned rank transformed(ART) data
I'm working on a 2x3 factorial design with two within-subject variables and I'd like to test for both main and interaction effects. Since the data is not normally distributed, I've performed an ...
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50
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Multiple comparisons and explanation of two-factor experiment
I am doing investigation with temperature and accession on trait of plants with R.
Temperature: 25/20, 30/25, 35/30
Accession: V9,BTx623, 2-16-6, 1-10-4, 2-16-6, 19-22-12
The interaction and ...
- 123
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31
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GLM Multiple Comparisons
I am performing several Generalized Linear Models in my analysis and I am wondering which method to use for adjusting p-values due to multiple comparisons.
I have 4 outcomes (judgement of intensity ...
- 11
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1
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34
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Mixed Effects with repeated measures design and covariate included
I have a dataset that consists of the oxygen consumption (MO2) values for 3 different species of fish. My experiment was a repeated measures design where I measured MO2 of the same 14 fish per species ...
- 31
3
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1
answer
53
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Identical SE values for different groups using emtrends
I'm using emtrends to extract slopes and do pairwise comparisons between the groups of my independent variable, controlled for the other variables in the model. ...
- 131
4
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2
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483
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multiple linear mixed models - multiple comparisons adjustment
I recently started to work on a case-control study using repeated measures over time (Modeling repeated measures data in R - Interpretation and Validation). I have several dependent variables and I ...
- 391
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43
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Multiple-comparison p-value adjustment in meta-analysis
Do we need to adjust $p$-values for subgroup analyses in a meta-analysis?
I'm wondering if the typical subgroup analysis methods, like the ones in packages such as ...
- 23
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1
answer
25
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Is there a test or function to perform multiple comparisons for a big dataset?
I have a big dataset of 2304 values : 384 different genes expression values in triplicates and for 2 different groups (ie, different treatments). I only want to compare the same genes between the 2 ...
Elizds
3
votes
1
answer
287
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FDR adjusted p-values and q-values
I am currently working on adjusting p-values in R using the False Discovery Rate (FDR) method and have encountered some confusion regarding the basic concepts of ...
- 391
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67
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Is there a way to do multiple comparisons of cumulative incidence curves? [closed]
I have a plot with 5 cumulative incidence curves and I want to know which curves are different from each other. Right now I have a p-value from Gray’s test (p<0.001), which tests all the curves at ...
- 13
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34
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Is it necessary to perform correction on confidence intervals of some specific coefficients of different models on same dataset?
I have a dataset which is about daily death rate of a specific disease and meteorological data:
The dataset structure is as below:
data =
Death count
Daily pm2.5 (lag 0)
Daily pm2.5 (lag 1)
Daily pm2....
- 250
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33
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Different scales in psychological testing -- z score or other standardization ? within anova using repetead measures
I'm pretty sure this is a basic statistics question; however, here it goes: In psychological testing, let's assume some participants were tested with three different tests. The first goes from 1 to 10,...
- 173
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34
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What is the algorithm for grouping means in a multiple comparisons LSD test?
Starting from the means of 10 treatments where the Fisher LSD interval is 2.1, how do you "manually" determine the number of homogeneous groups (a, b, c, d ...) and which mean belongs to ...
