Recent content by Laf

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    repeated measures - data comparisons

    Hello and thanks for reading. I'm conducting psychological research and am measuring a range of variables at four measurement points (pre-intervention, post-intervention, 1 month follow up, 3 months follow up). I am wanting to ascertain whether the intervention resulted in significant changes...
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    Functions for calculating time between 2 variables

    Hello, I have a large data set, and, in the data set, there are a number of dates entered as string variables (e.g., 05SEP2012). I need to determine the length of time in years between some of these variables (e.g., from 20MAR1969 to 05SEP2012), but can't seem to figure it out. I have...
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    MANOVA vs multiple ANOVAs

    Hello, I have 3 variables that have been measured on 4 occasions and a sample size of 16. I was considering a repeated measures MANOVA to ascertain if the changes over time were statistically significant. However, I am thinking that my sample size is too small to use a MANOVA in this way. I...
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    repeated measures MANOVA - 3 measurements in time - interpretation

    Hello, I am running a repeated measures MANOVA (in SPSS) to determine whether there are statistically significant differences in a group over time (pre-intervention, post-intervention, and 1 month follow up). After entering all the variables in for all 3 measurements, the multivariate...