# Tagged Questions

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### Which test should I use to assess for the statistical signficance of changes in multiple binomial dependent variables from T1 to T2?

Students have completed a test containing 20 questions at both T1 and T2, with an intervention in the interval. Scores for each question are either 0 (incorrect) or 1 (correct). I am interested in ...
119 views

### Interpreting multivariate tests in repeated measures

I have a within subjects design with 4 DVs and I ran a repeated measures analysis on SPSS. My DV is a physiological measurement and is not expected to be linear. My multivariate Wilks lambda is ...
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### How to test for differences in 3 related measures assessed pre- & post- treatment on the same sample?

I am designing a study to compare whether one specific treatment improves Quality of life. I am using a convenience sample ($N=20$). I hope to administer three ...
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### Between / Within-Subjects Analysis (with multiple dependent variables): Multi level expert around?

I have the following experimental data and desperately lack expert advice: Of a total of 60 Subjects, 20 are randomly assigned to one of three conditions (1X3) during treatment Each subject ...
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### Effect of duration of treatment on the outcome at different time points

I am interested in knowing if the duration of treatment has an effect on treatment with two different drugs. We have used two different drugs to treat cerebral ischemia (brain damage) and continued ...
844 views

### Non-normal and heterogeneous data with repeated measures ANOVA

I have run a repeated measures ANOVA using 3 groups and one factor with two levels. I have discovered that the data are not normally distributed (but not badly), nor is the variance homogeneous in ...
327 views

### Controlling for a variable in a GEE using SPSS

I have a dataset which I think would suit GEE. I am trying to assess the relative contribution of a number of simultaneous predictors and their interactions to the intensity of hurt feelings. I asked ...
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### Repeated measures within and between conditions

I tested reactions to pictures under five conditions (neutral, high status, low status, high adhesion, low adhesion), using an EEG of 16 channels. The pictures were presented in random order for 15 ...
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### How to test whether a covariance matrix has changed over two time points?

My task is to test if there's change in covariance matrix of 6 variables. Values of 6 variables are measured twice from same subjects (3 years between measurements). How can I do that? I've been ...
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### Whether to use multivariate F test, df adjusted estimate, or sphericity assumed in repeated measures ANOVA?

I have data that involves 2 groups (equal sample size in each) and data for each group over 3 time points (they are actually 3 different monetary reward conditions). I want to investigate within group ...
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### Statistics for multi-test replicated correlation analysis

I'm analyzing pairwise correlations of time series between two different types of microarrays done for several samples as biological replicates. So, I have M1 number of variables on type 1 array, M2 ...