Programming the statistical procedures from SAS

Exploratory Factor Analysis for longitudinal Data

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Exploratory Factor Analysis for longitudinal Data

Hello;

 

I have a data set that consists of survey responses from the same people over a 5 year period (Same person took the survey once each year over a 5 year period). I would like to conduct an exploratory factor analysis to see if there are any latent dimensions in the survey. I know that a regular EFA won't suffice because I would be violating the assumption that the observations are independent. My questions are:

 

1.) Which statistical technique can I use to identify if there are any latent dimensions?

 

2.) What is the SAS code for this technique?

 

Thanks,

 

 

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