11-26-2017 03:23 AM
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?