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

Stata 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

R code for analyzing data from an MRT to assess time-varying causal effect moderation

Sequential, multiple assignment, randomized trial (SMART)

SMART sample size applets

 

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.


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.)