Currently this software is not supported.
Select a Version
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.
Downloads
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)
Install
Download the PDF version of the installation instructions.
Overview
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.
Key Terms
What is Q-learning?
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.
What is SMART?
A sequential, multiple assignment, randomized trial (SMART) is an experimental design that enables scientists to build better adaptive interventions.
What is an adaptive intervention?
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.
Recommended Citations
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
Portions of this website and the related scientific research were funded by National Institute on Drug Abuse (NIDA) awards P50 DA039838 and P50 DA010075 to The Methodology Center at Penn State, Institute for Educational Sciences award R324B180003 and NIDA award R01 DA039901 to the University of Michigan.