Currently this software is not supported.

1. Are you using 32-bit or 64-bit SAS?

• In SAS, go to HELP > ABOUT SAS 9.
• Under Software Information “64” = 64-bit SAS.
• “64” not displayed = 32-bit SAS.

2. Are you using SAS 9.4 M5 or higher?

• Still under Software Information on the ‘About SAS 9’ screen, version is listed as SAS x.x and Mx.

PROC QLEARN for SAS 9.4 M5 and higher
64-bit SAS (v. 1.0)

PROC QLEARN for SAS 9.4 M4 and lower (works with SAS 9.1 – 9.3 as well)
64-bit SAS (v. 1.0)
32-bit SAS (v. 1.0)

Users’ Guide
PROC QLEARN Users’ Guide (v. 1.0)

Download the PDF version of the installation instructions.

PROC QLEARN, developed by the Methodology Center, is a SAS procedure for analyzing data from a sequential, multiple assignment, randomized trial (SMART) to develop adaptive interventions. The procedure uses a generalization of Q-learning, which allows treatments and covariates vary over time. Compatible with SAS version 9.1 or higher. Features include

• works with two-decision-stages,
• obtains confidence intervals for the regression parameters from decision stage 1,
• enables construction of more richly-individualized adaptive interventions, and
• takes full advantage of data generated during a SMART.

Q-learning, a method developed in computer science, is an extension of the standard regression method that can be used with longitudinal data in which treatments and covariates vary over time.

A sequential, multiple assignment, randomized trial (SMART) is an experimental design that enables scientists to build better adaptive interventions.

An adaptive intervention is a course of time-varying treatment designed to adapt to an individual’s changing life circumstances, response to treatment, or other designated indicator.

PROC QLEARN (Version 1.0) [Software] (2012). University Park: The Methodology Center, Penn State. Retrieved from http://methodology.psu.edu

Ertefaie, A., Almirall, D. A., Huang L., Dziak, J. J., Wagner, A. T., & Murphy, S. A. (2012). SAS PROC QLEARN users’ guide (Version 1.0). University Park: The Methodology Center, Penn State. Retrieved from http://methodology.psu.edu