lcca-package {lcca}R Documentation

Latent-class analysis and latent-class causal modeling

Description

Functions for fitting latent-class models to polytomous items with or without covariates, and for estimating average treatment effects in nonrandomized studies when the treatment is a latent class.

Details

This package provides functions for latent-class analysis (LCA) with and without covariates. It differs from other available LCA implementations (notably, the R package poLCA) in the following respects.

We also provide functions for latent-class causal analysis (LCCA), implementing new procedures for estimating average treatment effects when the treatment is a latent class. The major functions are:

   lca         Latent-class analysis
   lcacov      Latent-class analysis with covariates
   lcca        Latent-class causal analysis
The package also includes two datasets:
   hivtest     Diagnostic tests for HIV infection
   abortion    Abortion attitudes from the General Social Survey
   NHsmoking   Recent cigarette use from NHANES
   diet        Simulated dieting study

Author(s)

Joseph L. Schafer

Maintainer: The Methodology Center <mchelpdesk@psu.edu>


[Package lcca version 2.0.0 Index]