Free Software

Latent Class Analysis & Latent Transition Analysis

PROC LCA & PROC LTA
SAS procedures for latent class analysis & latent transition analysis SAS macros for use with PROC LCA

LCA Stata plugin
plugin for latent class analysis Functions for use with the LCA Stata plugin

WinLTA
Standalone program for latent transition analysis

LCA outcome probability calculator
for Microsoft Excel

Latent Class Causal Analysis
R package

 

Adaptive Interventions

Micro-randomized trials (MRTs) A sample size calculator for micro-randomized trials is available both as a web applet and as an R package hosted on CRAN

R code for assessing time-varying causal effect moderation
For analyzing data from an MRT

Sequential, multiple assignment, randomized trial (SMART)

SMART sample size applets

Optimizing Interventions

Multiphase optimization strategy (MOST)

RelativeCosts1
SAS macro for charting the relative cost of reduced factorial designs

FactorialPowerPlan
SAS macro for calculating the power, effect size, or sample size of a factorial experiment

Random assignment generator for factorial experiments
Web applet that provides a list of random numbers that can be used to assign participants to conditions in an experiment with many conditions

MOST Toolkit for R
R package for implementing functionality of other MOST software in R. (Hosted on CRAN.)

Variable Selection

PROC SCADLS & PROC SCADGLIM
SAS procedures for variable selection

VariableScreening
R package for high-dimensional screening in semiparametric, longitudinal regression (Hosted on CRAN.)

Time-Varying Effect Modeling (TVEM)

TVEM
SAS macro for time-varying effect modeling

Weighted TVEM
SAS TVEM macro that accommodates survey weights and clusters

Analysis of Intensive Longitudinal Data

FHLM-LLR
SAS macro for estimating functional hierarchical linear models using local linear regression estimation

funreg
R Package for functional regression of irregularly timed ILD. (Hosted on CRAN.)

TVEM can be used to analyze intensive longitudinal data.