Latent Class Analysis with Repeated O... PreviousNext
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 Vias C Nicolaides posted on Sunday, January 27, 2013 - 6:08 pm
Hello,

I conducted a study in which i have daily attendance data (Time In and Time Out) for 120 individuals.

Specifically, attendance data are for every first M/W/F of each month, although i can always code for more (i.e., 3*12= 36 time points per person).
For each such time point/day, i have Time In and Time Out as continuous variables (clock minute time), and i also have dummy codes for come early, come on time, come late, leave early, leave on time, leave late-all for each day.
Finally, I also have variables measured once (e.g., personality) as well as three times (e.g., Job satisfaction).

Ideally, i would like to examine:

1)If employees can be grouped in meaningful attendance categories based on their daily attendance behavior throughout the course of the year.

2)Whether such categories vary by the day/month measured or are relatively stable.

3) Whether such categories can be predicted by variables (e.g., personality), even by taking into account their possible variation due to day/month.

4) Whether such categories coincide with levels of job satisfaction, that is go up/down together.

After much research, i still am not sure the type of analyses i need to conduct.
However, i am very motivated to learn.

Thank you very much for your time and for reading this.
Any help would be greatly appreciated!
 Linda K. Muthen posted on Monday, January 28, 2013 - 10:40 am
It sounds like you could use the dummy variables come early etc. in a Latent Class Analysis to see if there are groups with similar profiles.

You may want to post this question on a general discussion forum like SEMNET to get more feedback.
 Vias C. Nicolaides posted on Monday, January 28, 2013 - 11:02 am
Thank you for your time and feedback! :-)

Would it be a regular latent class analysis then?
What about the fact that my indicators (dummy codes) are repeated measures?
There would have to be a command in the syntax that accounts for this, correct?

Is there an example that you can direct me to on the website?

Thank you again Dr Linda!
 Linda K. Muthen posted on Monday, January 28, 2013 - 1:34 pm
You would need to decide how to handle your data, for example, average over a certain number of days.
 Vias C. Nicolaides posted on Monday, January 28, 2013 - 7:15 pm
So i wouldn't be able to model the 36 dummy-coded observations per individual, and form latent classes based on these within person observations? (N=36 observations per person X 120 employees)

Rather, i would have to get a single dummy code observation per employee(an average over certain days as you indicated-can i do that with dummy codes?) and form latent classes from the between person observations (N=120 employees)?


I hope the above make sense, i tried to describe what is in my mind.
I appreciate your time and help in this!
 Linda K. Muthen posted on Tuesday, January 29, 2013 - 9:53 am
There are many ways to do this. I can't make that decision. One suggestion is to average over some of the days. You don't need to do that. For further guidance, you should seek the help of a statistical consultant. We can't provide that level of help on Mplus Discussion.
 Vias C. Nicolaides posted on Tuesday, January 29, 2013 - 12:32 pm
I understand and thank you for your help and time in this! :-)
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