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Latent Profile Analysis with Repeated... |
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I'm hoping to run a latent profile analysis in order to examine if there are groups of participants who recover differently after having a vaccination, using both behavioural and cardiac data. I have simultaneously collected video and cardiac data one minute prior and three minutes following a vaccination. I am hoping to look across 4 different 30-s time periods (baseline, immediately post-needle, 1-minute post needle and 2-minutes post needle) for both behaviour and cardiac data. My questions are as follows: 1) Can I look at two repeated measures (i.e., behaviour/cardiac) simultaneously using LPA? 2) Should I enter the 8 variables into the model (cardiac and behavioural data across the vaccination period), or is there a way to examine the intercept/rate of change across the four time periods for each variable? |
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1) Yes. You can use either two latent class variables (one for each process using Model c1:, Model c2: ) and let them correlate, or use one for both. 2) For 2-process LPA, having the 8 variables together is good. With rate of change I think you refer to growth modeling which is certainly also possible and appropriate if you think there is a simple growth form (linear, quadratic etc). |
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Hello, Thanks so much- is there a resource or syntax that you can provide me with that will help me to run the analyses? Thanks! |
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You should get the same results - it's a good check that you did the equalities right (make sure the number of parameters is the same). |
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Use UG ex 7.14 as starting point. |
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