| fitGBTM | Fit Group-Based Trajectory Models (GBTM) for class enumeration. |
| fitGCM | Fit Growth Curve Models (GCM) |
| fitLCGA | Fit Latent Class Growth Analysis (LCGA) models to refine covariance structure. |
| getBest | Select best-fitting model from a list of Latent Growth Models (LGM) |
| getFit | Get fit indices from Latent Growth Models (LGM) |
| getPoly | Refine Polynomial Order in Latent Growth Modelling (LGM) |
| getSpaghetti | Plot individual trajectories of outcome - Spaghetti plot |
| LGMobject | Create Mplus model objects for Latent Growth Modelling (LGM) |
| runLGM | Run Latent Growth Models (LGM) and replicate the best loglikelihood value (LL) |
| symptoms | Symptoms Data |