Hi to everybody..
I run a latent class model using the command "traj"

The better model is the model with:

1) AIC: high score
2) BIC : high score
3) APPA>0.7
4)OCC above 5 for all groups shows good assignment accuracy


If I obtain an APPA=1, as a consequence, I can't calculate OCC because the numerator of OCC is equal to zero.
Can I choose this model as the best model? (COMPLY WITH ALL CONDITIONS EXCEPET OCC must be >5.)


thanks to everybody