This R package was developed by the Methodology Center to allow R users to perform latent class causal analysis (LCCA), latent class analysis (LCA), and LCA with covariates. LCA describes relationships among a set of categorical variables by assuming that they are conditionally independent given an unobserved categorical variable. The lcca.r package uses imputing estimating equations to estimate the average causal effects of a latent exposure (i.e., latent class) on a normally-distributed outcome variable. LCCA combines aspects of latent class analysis with Rubin’s causal model (Rubin, 1974; 2005).
The LCCA package includes 3 primary functions:
- lca: Fit a conventional LCA model
- lcacov: Fit an LCA model with covariates
- lcca: Fit an LCCA model