August 2009
Intermediate to advanced
648 pages
17h 35m
English
book
Categorical Data Analysis Using The SAS® System, 2nd Edition
by Maura E. Stokes, Charles S. Davis, Gary G. Koch
Content preview from Categorical Data Analysis Using The SAS® System, 2nd Edition
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4.3. Sets of s × 2 Tables
The following data come from a study on adolescent usage of smokeless tobacco (Bauman, Koch, and Lentz 1989). Interest focused on factors that affected usage, such as perception of risk, father’s usage of smokeless tobacco, and educational background. Table 4.5 contains two s × 2 tables of risk perception (minimal, moderate, and substantial) and adolescent usage by father’s usage. This time, the row variable is ordinally scaled. The question of interest is whether there is a discernible trend in the proportions of adolescent usage over the levels of risk perception. Does usage decline with higher risk perception?
| Father’s Usage | Risk Perception | Adolescent Usage | ||
|---|---|---|---|---|
| No | Yes | Total | ||
| No ... | ||||
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