I want to use syntax from example 8.14 for a latent transition analysis model with a covariate influencing transition probabilities, but with five time points. I don't know if the %overall% part of the syntax is correct.
For a time-invariant covariate (x): MODEL: %OVERALL% C2 ON C1; C3 ON C2; C4 ON C3; C5 ON C4; C1 ON x; ! (is this part correct? or should I add C2 on x; C3 on x; and so on?) MODEL C1: %C1#1% C2 on x; [u11$1] (1); . MODEL C2: %C2#1% C3 on x; [u21$1] (1); .. MODEL C3: %C3#1% C4 on x; [u31$1] (1); . MODEL C4: %C4#1% C5 on x; [u41$1] (1); .. MODEL C5: %C5#1% [u51$1] (1); .
And for a time-varying covariate (x1, x2, x3, x4, x5)? Is the below syntax correct?
MODEL: %OVERALL% C2 ON C1; C3 ON C2; C4 ON C3; C5 ON C4; C1 ON x1 x2 x3 x4 x5; MODEL C1: %C1#1% C2 on x1; [u11$1] (1);
MODEL C2: %C2#1% C3 on x2; [u21$1] (1); .. (and so on).
You are specifying a very complex LTA that will be computationally heavy. In principle there is no error in the syntax as far as I can see. Although I don't understand why x2-x5 would influence C1 if they happen later.
However, I think you should study the new and better way to do LTA described here: