Dear Mplus team, I am interested in identifying trajectories of adaptation to spinal cord injury during the rehabilitation time using LGMM. I have 240 participants and 3 measurement time points which are assessed as follows: T1: approximately 1 month after injury T2: approximately 3 months after injury T3: at rehabilitation discharge When exploring the raw data, I realized that there is great variability in the time when individuals where assessed at T3 (some individuals were discharged earlier and therefore assessed soon after 3 months, while others were discharged 6 or more months later). I was then wondering what would be the best approach to handle such variability in assessment time. Would the use of individually varying times of observation (TSCORES) be a suitable option? Is there any other approach that could be used to account for the inconsistency of assessment time? I appreciate a lot your insights regarding these issues.