## 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)

- SAS code to
**compare embedded adaptive interventions** **qlaci**R package for informing the development of adaptive interventions**PROC QLEARN**SAS procedure for informing the development of adaptive interventions

#### SMART sample size applets

- Applet for
**selecting the best embedded adaptive intervention**in a SMART based on a continuous outcome - Applet for
**comparing two embedded adaptive interventions**in a SMART based on a survival outcome - Applet for calculating the minimum
**sample size for a pilot SMART** - Applet for calculating the minimum
**sample size for SMARTs with Binary or Continuous Outcomes**

## 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.)