LGMobject               Create Mplus model objects for Latent Growth
                        Modelling (LGM)
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
runLGM                  Run Latent Growth Models (LGM) and replicate
                        the best loglikelihood value (LL)
symptoms                Symptoms Data
