Determining Power and Sample Size Using SAS/STAT Software

Duration: 2 half-day session CEU: 0.6

This course teaches you how to use the POWER and GLMPOWER procedures to compute prospective power and sample size calculations.

Learn how to

estimate the parameters for a power analysis
conduct a sensitivity analysis of the parameters
perform power analyses on a two-sample t-test, a multiple regression model, a one-way ANOVA model, a two-way ANOVA model with covariates, and the comparison of two survival curves.

Who should attend

Those who are involved in planning research studies and designing experiments

Prerequisites

Before attending this course, you should have taken SAS Programming I: Essentials, Statistics I: Introduction to ANOVA, Regression, and Logistic Regression, and Statistics II: ANOVA and Regression, or have equivalent experience.

Course Contents

Power and Sample Size Analysis

concepts of power analysis
two-sample t-test
equivalence test
noninferiority test
confidence interval precision
sawtooth power function in proportion analyses
power analysis of two independent proportions

Advanced Power and Sample Size Analyses

multiple regression
one-way ANOVA
two-way ANOVA with covariates
comparing two survival curves

Software Addressed

This course addresses the following software product(s): SAS/STAT. This course also addresses Base SAS software and SAS/GRAPH software.

Course Materials

Students attend Live Web classes using a Web browser and a telephone and interact with their instructor and fellow classmates in real time. Each student receives an e-mail with instructions on how to join the class three business days before the class begins. The instructions e-mail includes a link to download the course materials, including the exercise files. Students need to download and print the course materials prior to class.

System Requirements

For Live Web, you must

review and follow the general system requirements.
complete the course exercises through our virtual lab. The virtual lab allows you to access the software used in class over the Internet, so that you do not need this software on your local machine.
run this test to connect to a virtual lab session. If firewall problems prevent you from connecting to the virtual lab, then you will need the following software installed and configured in your environment to participate in the course exercises:
- Base SAS, SAS/STAT, and SAS/GRAPH software, Release 9.2 or 9.1.3 on a Windows operating system