Getting Started with SAS Programming

Chapter 20: Computing Frequencies

Introduction

You can use PROC FREQ to create one-way, two-way (row and column), and three-way (page, row, and column) tables. You can output counts and percentages as well as statistics such as chi-square and Fisher’s Exact test. This chapter shows you examples of these tasks.

Creating a Data Set to Demonstrate Features of PROC FREQ

The first step is to have some test data to demonstrate features of PROC FREQ. To this end, you can run Program 20.1 to generate a data set called Risk that includes the following variables:

Variable	Description
Subj	Subject number
Gender	1=Male, 2=Female
Age	Age in years
Chol	Cholesterol level
BP_Status	Blood pressure status (High or Low) ...