SEM for longitudinal Data!

[Meerna Mroueh]

Hi to all,
I am new to stata and have to build an SEM for my research, but i am struggling to figure out how to get it done.
my research is a longitudinal one conducted on 3 organizations. Employees filled a questionnaire of 35 questions, where each question is a var in stata and each set of vars represents a factor for me (saying from question 1 to 8 is factor 1) and so on. The employees filled the questionnaire in 2017 and again in 2018, but i don't know the identities of the employees i only have the company as an identity. I tried to build the SEM where the factors (i have 5 are considered the latent vars for me) and linked them to the questions, but i am not how to deal with the year issue. I am considering the CFA for my data analysis.
Can anybody please help me?

[Phil Bromiley]

You'll increase your chances of a useful answer by following the FAQ on asking questions - provide Stata code in code delimiters, readable Stata output, and sample data using dataex.

If you can't id individuals, then it is hard to do much with the time series portion of your data. You can put in a dummy for organization. You'll probably want to treat this as if you have a separate equation for the outcome each year. If you google Stata panel sem, you'll see several papers on this topic. You might also look at latent growth models.