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1answer
33 views

How to compare ordered logistic nested models?

Let's say that I have a full and a restricted model that looks like this: ...
4
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0answers
49 views
+100

Model relation between two rank variables where ranks are nested within subjects in one variable

I have elicited 10 attributes from $N$ subjects. Each subject rank ordered his own 10 attributes from the most to the least important one. I am interested in the relation between the order of ...
1
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1answer
71 views

Using lme to perform a nested ANCOVA in r

I want to perform a nested ANCOVA using the function lme in r. My data concerns the growth rate (sgr) of fish at different temperatures (temp). In the trial there were 3 replicate tanks each housing 8 ...
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0answers
17 views

Looking for a test for a very specific mean of means situation

There is a very similar post to this one, and I am more going off of what has already been asked, than asking a new question. See post: "Test for comparing "mean of means"" The answer ...
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0answers
11 views

How to handle nesting in a mixed effects model?

I am working on a dataset that has two groups, control and treatment. The data were collected from participants of each group at two time points. At each time point, there were multiple observation ...
0
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1answer
18 views

randomization test on differences

I have three treatments (A, B, and C) that I would like to compare. However, within each treatment, I have nested "high" and "low" (H and L) treatments. The values for A, B, and C must be calculated ...
0
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1answer
30 views

Habitat as fixed factor with a nested design

I have the following design: Two regions, in each region 6 sites, in each site three habitats and in each habitat 4 100m2 plots. Then, in each site 12 plots (3 habitats, 4 plots). For each site I ...
1
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1answer
22 views

model specification: crossed random effect for item and subject with fixed effect nested (??) within items

In a previous thread I got the advice to run a crossed random effects linear mixed model with my data. Whilst working on the model specification, I came across a new question. In short, all ...
0
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1answer
24 views

Fitting a model on continuous response variable using lme4 package in R? Factorial or Nested design?

I am trying to find the effect of plant traits on water infiltration and did some analysis using lme4 with the help of 2 statisticians, both of them suggest different models to check it. I can't ...
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0answers
33 views

mlogit package R: Question about Nested Logit

In nested logit models you can define regressors at each level of the tree. In all examples I've read in the manual and additional examples, the regressors are defined only for the last level. I'll ...
0
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1answer
22 views

multiple samples from each subject: nested random effect in lmer?

I have a simple design: one dependent variable (brain activity), a factor I manipulated with two levels (ct1 and ct2) and patients participated in both levels. So far so good. But for each patient, I ...
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0answers
12 views

Nested model instead of 5 individual t-tests?

I am trying to compare a test with three replicates to a reference with 9 replicates. My setup is the following: 2 completely different test methods (A, B). Each Method is seperated into 3 ...
3
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2answers
28 views

Are any pairs of these four structural models nested in another?

Are any pairs of these four structural models nested in another? I think the second-order single factor model is nested in the second-order two factor model (second order single factor model is when ...
1
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0answers
22 views

What would be the best analysis / analyses for the over time coral bleaching recovery data?

I am analyzing this MISeq microbial community data with Phyloseq and vegan R-packages from coral hosts and I would much appreciate some help and ideas as this is my first analysis of this kind. We ...
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0answers
27 views

Tukey HSD for subgroup in a nested ANOVA in R

For the following data, I can do a nested ANOVA followed by post hoc test for Tech as follows using the aov function. The ...
0
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0answers
9 views

Check distributions - Hierarchy

We are analysing imaging data of synapses in brains of multiple animals of different genotypes (groups). I have variable number of synapses in each animal. I am measuring the volume of each synapse....
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0answers
31 views
1
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1answer
19 views

Mean comparison multiple groups **NESTED ANOVA**

I’m not sure if this question has been asked before as I don’t know how to phrase it in a search. But essentially I’m trying to test if there are differences between store locations that have trained ...
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0answers
28 views

Nested ANOVA alternative for heteroscedastic data (Nested Welch ANOVA)

Question: Is there an equivalent of Nested -ANOVA for data which fails ANOVA requirement? Is it possible to perform in R? Many thanks, Savani I am doing an analysis of large data set. I have ...
3
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3answers
266 views

Does likelihood ratio test control for overfitting?

I have two nested logistic regression models, A and B. A is nested under B. Let's say B has $K$ more features than A. B has a higher log likelihood than A. However the improved likelihood of B is due ...
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0answers
12 views

How to compare seed count for tree species at different depths?

I want to investigate the difference in seed count between three different tree species at three soil depth levels. For each tree specie I have 10 trees and for each tree I have five soil samples at ...
0
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1answer
29 views

Are these glm models nested?

I am not able to tell if these two glm models are nested within one another. This is from the "mack" dataset in the R library "gamair". ...
0
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0answers
47 views

How to perform a nested or hierarchical ordinal logistic regression in SPSS

I have one outcome/dependent variable that can be ordinal or nominal and 3 independent variables. I have learned so far how to perform ordinal and multinomial logistic regression in SPSS between a ...
1
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1answer
77 views

Three-level partially nested model

I am modeling change over time in group psychotherapy subjects using R and lme4. My data have the following structure: subject (id) time (code 1-10 for equally spaced repeated measures) outcome (for ...
3
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1answer
34 views

Nested Anova vs Multilevel Linear Models

I am working on a problem which revolves around individual axons / nerve cells in two treatment conditions. All relevant questions are clearly on the axon level, and dependent on properties (size, ...
1
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0answers
32 views

AIC and nested models

There is a related question here but two highly upvoted answers there don't seem to agree with each other, and in any case I wanted to take a different tack. Is AIC useful for comparing: non-nested ...
0
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0answers
23 views

Nested fixed effects?

I have a question about an analysis that I thought would be really simple, but turned out to be a bit more complicated (or maybe I am just overcomplicating it/ my stats skills are insufficient, that's ...
0
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0answers
25 views

Nested random factors in GLMM: use them or drop them?

I am a new R user running into GLMM models. I have some data of frequency of pollinators in crop fields adjacent to forest fragments, with the following experimental design: 4 forest fragments, 2 of ...
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0answers
22 views

Correct model for mix of nested and split-plot design in R?

I'm struggling to create the right model to analyze the treatment effects on my response variable in a recent field experiment. I believe I have a somewhat confusing mixture of nested and split plot ...
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0answers
35 views

Nested Manova with random nested factor won't run!

I'm running a multivariate analysis on a nested design with a random factor (Site) nested within a fixed factor (Region), with five dependent morphological variables. I have two sites within each of ...
0
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0answers
61 views

Split-Split-Plot or nested ANOVA using lme

I have a simple design but I do not know how to handle it. I have a nested anova (or a split-split-plot anova). I have three grazing treatments (Grazing, coded as Gra1, Gra2, Gra3), replicated each ...
3
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1answer
53 views

Nesting terminology in lmer

Suppose I have the following nested lmer structure: lmer(Y ~ X1 + X2 + X1:X2 + (1 | A) + (1 | A:B), data=d) which is the same ...
1
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0answers
16 views

Analyzing nested categorical data

I need to compare binary responses (nectar present/absent) between flowers of two treatments ("y" and "n"). This seems like a straight forward case for a Chi-square test, however- my design involved a ...
0
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0answers
11 views

outlier in Nested ANOVA in Gage R&R

is there any specific method to identify outliers and reduce their impact in ANOVA on Nested design because I have Nested design on Gage R&R which contains 4 outliers in 3 operators . Thanks
0
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0answers
17 views

Am I correctly assessing these linear mixed effects?

Using R - lmer() calls and anova() to compare models. 12 images are rated by participants for quality. They are divided (based on previous data) into High Quality and Low Quality images (6 each) - ...
1
vote
1answer
37 views

Binomial test with nested data

I hope to compare the proportion of "IN" & "OUT" outcomes in my data. I would have used a simple binomial test (our hypothesis is that the subjects are more likely to endorse "OUT" than "IN") but ...
0
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1answer
32 views

How to test repeated, nested, count data

I have samples from an experiment in which I have counted cells. I took 2 pictures of each kidney, photographing both kidneys of each subject. Each individual belongs to a group (infection). My ...
0
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0answers
72 views

Using lme4 correctly for a nested mixed model

I'm trying to create a nested model in lme4 and would like feedback on whether I've understood its use correctly. Every individual (n = 144) had two proteins measured after 0, 12 and 72 hours. At ...
0
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0answers
27 views

Comparison between different models: hierarchical models and model with dummy

I have these three models: M0<-glm(y=="yes"~x+z+b+c+r+as.factor(w),family="binomial") 'logLik' -1147.734 (df=65) ...
0
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0answers
30 views

Mixed model with clustered and repeated-measures data

I'm analysing the results of an experiment using a mixed model. Reaction times for each subject (40 male and 40 female) to 8 stimuli have been registered. The process has been repeated on the same ...
0
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0answers
12 views

Are these CFA models nested?

I am currently fitting and comparing models with ordinal DV. I want to test the following two models: 2factor <- f1 =~ item1 + item2 + item3 + item4 f2 =~ item5 + item6 + item7 3factor <- f1a =...
0
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0answers
25 views

How to test whether my models are nested or non-nested?

I have built two models (linear probabilty and logit) in order to decribe certain variable. How can figure out whether they are nested or not? UPD The idea that I am pursuing is to measure how ...
1
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0answers
53 views

How to specify a simple model in lmer/lme4: do I need explicit nesting?

I am measuring response time RT_log for 3 experimental manipulations (Conditions), and there are 4 ...
0
votes
1answer
22 views

Binomial test for nested data

I have 100 subjects who were scored on their performance in a series of trials (binary outcome for each trial: "hit" or "miss"). I want to find out whether overall there are more "hit" than "miss" ...
0
votes
1answer
47 views

Random effects, fixed effects, or perhaps nested fixed effects?

Simple question (I hope). I have the following experimental design: Two groups: A, B (let's say they represent the two sexes), where I randomly sampled 4 subjects from each group, and measured blood ...
1
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0answers
27 views

What analysis is appropriate for binary outcomes nested within individuals?

I'm working on my FYP & want to find out if my manipulation (condition: priming v.s. no priming) has any effect on distribution outcome (binary outcomes: 1-1 FAIR split; 2-0 UNFAIR split). Each ...
0
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0answers
45 views

Performing a 2-1-1 multilevel mediation in r

I'm interested in the relationships between the following three variables: religiosity, teleological explanations of daily events, and gratitude resulting from those events. I have collected data ...
0
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0answers
13 views

nested logit interpret coefs

how do I get the odds ratio from a coefficient of a nested logit. I know for multinomial logit, the exp of the coeff of a binary independent variable is the odds ratio. is that true for nested logit?
0
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0answers
37 views

Linear Mixed Model with 3 variables

I would appreciate some assistance with setting the statistical analyses of my experiment. During my experiment 14 participant's motor responses (ptp) were tested ...
0
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1answer
145 views

Crossed fixed effects model specification including nesting and repeated measures using glmm in R

Background: I am interested in looking at the effects that Culture, Treatment and Time have ...