linear mixed model

I have been given advice that I should always interpret the relationships shown in the model of best fit, from having run a linear mixed model, regardless of the p-value. I want to do this anyway, as some of my moderator/predictor variables didn't quite reach significance. But I know my...

I have undertaken an RCT and, given multiple irregular time-point measures of the DV, have used linear mixed models to analyse the results and include moderator/predictor variables. CONSORT is quite emphatic about the reporting of effect sizes. However, SPSS does not produce these for linear...

Hi everyone, I need your help with regards to specifying repeated covariance type in SPSS. I am trying to build a Linear Mixed Model in SPSS with the subject being 'borough' and repeated variable being YEAR . My dependent variable is the number of people claiming housing benefit, per year (for...

Hi! I have a question. I'm very new to mixed model analysis and I'm trying to find out how I can use it to solve my problem. In my research project, I have seen two groups of children (cases and controls) and they performed all sorts of psychological tests and filled out questionnaires. Now I...

Dear community, I did a linear mixed model full factorial with 2x2. I use the linear mixed model like an ANOVA and I have one significant main effect and a significant interaction effect.To solve the interaction I split my data by one variable and analyze the main effect by the other variable...

I have just started with my research project. My supervisor asked me to do some simple stuff with the dataset in SPSS. Unfortunately, I don't have a clue of what I'm doing in SPSS. Could anyone help me? I'm supposed to do a mixed linear model analysis, but right now I'm just preparing the...

Hi people, I am having some confusion over how to carry out the stats for my experiment. In the experiment, there is two condition of teaching method "prof-generated" and "student-generated" and the DV is students' quiz scores over 4 quizzes. As I carried out the experiment in a real...

It's kind of urgent. i need to hand out my thesis in 3 days from now :/ Can someone explain me how to computer r squared in linear mixed model? i included a photo of the model output Thanks [1]: https://i.stack.imgur.com/I9D5k.png

Dear all, every help is highly appreciated! I have a data set that looks like the one I attached to this post. I have five independent variables for each company (for each time period one). Now I need to know, if the values significantly increase over the time of five year. In other words I...

A two-level model, with one explanatory variable at the individual level (X) and one explanatory variable at the group level (Z): Y_{ij}=\gamma_{00}+\gamma_{10}X_{ij}+\gamma_{01}Z_{j}+\gamma_{11}X_{ij}Z_{j}+u_{0j}+u_{1j}X_{ij}+e_{ij}\ldots (1) correlation between u_{0j} and u_{1j} is 0 . The...

Am I specifying my lmer model correctly ? Say I have one independent variable (X) at individual level and one independent variable (Z) at group level. Both are continuous variable . If the model is...

I am working on this time-effect project in which we pulled data at different time points from a big old data set. The issue is that all subjects were sacrificed at different times after treatment. So I have 16 samples at time 1, 10 samples at time 2, and so on. I am going to do Friedman test...

Hello, I am currently doing a study on the defensive behavior of the European Grass Snake, and I was hoping someone could help me figure out which model to use to analyze my data. I have 3 categories of dependent variables - 1) Pre-Capture Behavior 2) Post-Capture Behavior 3)...

Hellow, Here is a question on linear mixed model analysis for an intervention The study composed of two group of subjects who receive a DrugA versus Placebo and their Cholestrol and Sugars measured at baseline, six months and 12 months. So i did a simple analysis to detect the changes with...

So I've looked a quite a few tutorials and forums to see if anyone has posted something similar to the dataset I'm analyzing, and it doesn't seem like anyone has. I more need someone to tell me if what I'm doing is right or not. My data is looking at maternal cytokine levels during the...

Hello I'm trying to modelize the diving depth of birds according to categorical (sex, age class: adults/subadults) and conitnuous parameters (temperature, salinity). The frequecy distribution of this data looks like this: many many many dives between 0-50m deep, some between 50-100m deep and...

Hello all, I have accuracy scores on 6 different tests. I have calculated the percentage of the accuracy in each test so that each of the tests has a score on the same scale (0-100%). I want to see how well do each of the 6 different tests correlate with a 7th test. I have been told I should...

Hi! I'm struggling with a basic question for which I couldn't find an answer in the texts and papers on LMM in SPSS. This is the basic structure of the dataset: - outcome = grip strength - effect of interest = injury on dominant vs non-dominant side The source of repeated measures...

Hi all, I have a data set with two within subject variables, word category (2 levels) and time (3 levels), and I have a between subjects variable, namely group (2 levels). My dependent variable is reaction time (RT). If I run three separate repeated measures ANOVA for the three different...

Hi! I've been working on thses stats for a long moment and I still can't figure out what is the best way to deal with this problem. Participants in a clinical study have written in a diary emotions and other variables trough a therapy for OCD. I am using LMM in SPSS to analyze a set of...