Latent Profile Analysis with Repeated... PreviousNext
Mplus Discussion > Latent Variable Mixture Modeling >
 Jordana Waxman posted on Monday, November 26, 2018 - 7:30 am
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?
 Bengt O. Muthen posted on Monday, November 26, 2018 - 12:53 pm
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).
 Jordana Waxman posted on Monday, November 26, 2018 - 1:15 pm

Thanks so much- is there a resource or syntax that you can provide me with that will help me to run the analyses?

 Bengt O. Muthen posted on Monday, November 26, 2018 - 1:19 pm
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).
 Bengt O. Muthen posted on Monday, November 26, 2018 - 2:22 pm
Use UG ex 7.14 as starting point.
Back to top
Add Your Message Here
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Options: Enable HTML code in message
Automatically activate URLs in message