ABSTRACT

In this chapter, we discuss how to apply the log-linear models introduced in the last chapter to model cell counts in contingency tables. We considered methods for two-way contingency tables in Chapter 2 and stratified two-way tables by a categorical variable in Chapter 3. Although easy to understand, these methods are too specific to the questions considered; different statistics need to be constructed depending on the nature of the problems. Further, their generalizations to higher-dimensional tables are quite complex and difficult. Although regression analysis introduced in Chapter 4 may be applied in that regard, we must select one variable to serve as the dependent, or response, variable, which may not always be reasonable or even possible.