repeated measures

1. Repeated measures GLM - restricted permutations

Hi all, I have some multivariate data (species counts) and want to investigate the effect of some treatment over time. I am using the mvabund package in R, which fits a separate GLM to each species. Specifically, my data are invertebrate taxa collected from pitfall traps under two...
2. Issue in Interpreting SPSS output of GLM repeated measures

I have a data set with repeated measures for each individual. That is there a re two groups, treatment and control. And each individual is measured at 3 time points. But there are missing values. That is I don't have data for all 3 time points for all of the individuals. I carried out a SPSS GLM...
3. Monte-Carlo simulation of repeated-measures ANOVA

Hello, I want to conduct a Monte-Carlo simulation of a repeated-measures ANOVA. The random numbers used for the simulation need to have specified mean values, standard deviations and correlations between the levels of the repeated-measures variable. Generating random nubers with a...
4. Repeated measures Anova in SPSS (3x2) different factor levels

Dear all, I'm trying to find out how to run a repeated measure anova for a 3x3x2 design with two within subjects factors in SPSS. The problem I face is that when I want to enter a factor with two levels and a second factor with three levels, SPSS asks for six within subjects variables...
5. How to set up manova in MATLAB for multifactor analysis

I have 4 independent variables: Frequency (within-subjects, continuous, 16 levels) Amplitude (within-subjects, continuous, 3 levels) Time (between-subjects, continuous, 7 levels) Status (within-subjects, categorical, 2 levels) and 2 dependent variables: Storage (continuous) Loss...
6. longitudinal analsis of dichotomous variable in SPSS

Hi all. I'm stumped. I have a dichotomous (yes/no) variable that I have assessed at 4 different time points. I would like to analyze this variable to see if/how it changes over time, but honestly don't know how. I can run a bunch of chi-squares, but i'm pretty sure that doesn't really address...
7. Analysis for a repeated measures design with covariate that varies over conditions?

Hi all, I'm trying to find the correct analysis that will allow me to carry out the equivalent of a repeated measures MANCOVA with a covariate that varies over three conditions. Basically I have an experiment with 3 different types of task where every participant does every task in a...
8. Repeated Measures Nested Model in PROC Mixed?

Hello, I'm looking for help analyzing data. Here's the experimental setup: 12 experimental plots, divided into 3 blocks. Each block is a factorial combination of two treatments (precipitation, nitrogen). Within each plot, I have 3-6 trees of species A and 3-6 trees of species B...
9. Non-parametric repeated measures guidance needed

What I am studdying is Aspergillosis (a disease) -it is caused by the terrestrial soil fungus called Aspergillus sydowii - of the sea fan Gorgonia ventalina. What I know so far: 1) My data is non-parametric....Residuals are not normally distributed and transformations do not help. 2)...
10. Help With Repeated Measures ANOVA

Okay, so I have got 15 subjects, who had to perform a repeated sprint test (5 sprints) twice one with a supplement then the other with a placebo the following week. I now have times for with supplement and placebo for every single subject and need to perform an analysis using SPSS. I believe I...
11. Analysis of a longitudinal study where interventions are received at different times

I have a data set of university students. The university has 8 different assisting programs, mostly like scholarships, for needy students to help them concentrate on their studies. Since it costs a lot of money for the university to run these programs, it opts to evaluate how effective each of...
12. Dealing with missing data in Repeated-measures ANOVAs

Afternoon all, I've been running a longitudinal follow-up study to assess outcomes following a psychological treatment for ME. As to be expected, there was a lot of drop-out by 12 months, the 5th time point of the follow-up. Usually I'd do a RM ANOVA to analyse this, but with the missing...
13. longitudinal multivariate data - multivariate repeated measures

Hi! Am dealing with a multivariate longitudinal data where we collect data from two group of subjects (cases and controls) at baseline , one month , two month, and at three months . At each of these four time points we collect data (which basically consist of 4000 variable of which many of...
14. RM ANOVA vs. ANCOVA question

Hi stats friends! I'm trying to decide whether to use an RM ANOVA vs. an ANCOVA to test a question and I could use your help. Participants were randomized into 3 groups (categorical between-subjects IV: Factor A), and two continuous variables (let's call them B & M) were measured at 3 time...
15. Expectation eaximization with repeated measures data

I use SPSS 21. I have repeated measures data with multiple time points. After the first time point every other time point (two follow-up time points) has significant participant attrition (close to 6oo participants at baseline and around 400 at each follow-up time point). I would like to use...
16. Which approach to use? Repeated measures with a covariate

Hi, I hope that someone can give me a pointer please. I am trying to determine which is the most appropriate test to apply to my data. I have some data which were originally formulated for a 2x2 Repeated Measures ANOVA. I was particularly interested in the A*B interaction. However, having...
17. Desperate call for statistics help

Hello, I've just finished my placement year in my undergraduate degree but I'm really stuck with which statistical tests I need, and how to input the data into SPSS. Any help would really mean the world. Introduction to study: Working within a community mental health team. Researching whether...
18. MLR equivalent for repeated measures, multiple correlated responses

I'd like to determine the best approach to determining effect sizes for a set of experimental data with multiple correlated responses. Due to repeated measurements and high correlation between responses, I know that a simple multiple linear regression model obviously isn't the answer. The...
19. Nonparametric/Ranking Data Help!!

Hi all, I am a PHD student attempting to come to grips with an analysis of some recent data. I have a repeated measures design. 220 students were presented with 13 different problem scenarios and then had to indicate who they would seek help from, ranking a list of seven help providers (ie...
20. repeated measures factorial ANOVA post hoc test

Currently I am working on a way to distinguish Delirious patients from patients who still suffer from anesthesia and controls. I use the EEG and calculate relative powers in four frequency bands (Delta, Theta, Alpha and Beta) in three different regions (Anterior, Central and Posterior) of the...