Limitations of the Base Program alone (without add‑ons):
: The Base Program alone cannot perform analyses involving TYPE=MIXTURE (latent classes) or TYPE=TWOLEVEL (multilevel/clustered data). The Combination Add-On Mplus 6.12 Base Program and Combination Add-on
: Analyzes clustered data (e.g., students within schools) and complex survey data. Combined Models Limitations of the Base Program alone (without add‑ons):
TITLE: LCA with Distal Outcome - Mplus 6.12 Combo DATA: FILE IS "alcohol_use_data.dat"; VARIABLE: NAMES = id u1-u5 college_complete; USEVARIABLES = u1-u5 college_complete; CLASSES = c(3); ! <-- Requires Mixture add-on CATEGORICAL = u1-u5; ! Binary indicators (0/1) AUXILIARY = college_complete (R3STEP); ! 3-step method for distal ANALYSIS: TYPE = MIXTURE; ! <-- Requires Mixture add-on STARTS = 200 40; ! Random starts to avoid local maxima MODEL: %OVERALL% ! Measurement model (free parameters) %c#1% [u1$1-u5$1]; ! Class 1 thresholds %c#2% [u1$1-u5$1]; ! Class 2 thresholds %c#3% [u1$1-u5$1]; ! Class 3 thresholds OUTPUT: TECH1 TECH11 TECH14; SAVEDATA: FILE = "class_membership.txt"; SAVECLASSIFICATION; <-- Requires Mixture add-on CATEGORICAL = u1-u5;
Some of the key features of Mplus 6.12 Base Program include: