SPSS Categories® 11.0

18 Chapter 2
Data. CATREG operates on category indicator variables. The category indicators should
be positive integers. You can use the Discretization dialog box to convert fractional-value
variables and string variables into positive integers.
Assumptions. Only one response variable is allowed, but the maximum number of predictor
variables is 200. The data must contain at least three valid cases, and the number
of valid cases must exceed the number of predictor variables plus one.
Related procedures. CATREG is equivalent to categorical canonical correlation
analysis with optimal scaling (OVERALS) with two sets, one of which contains only
one variable. Scaling all variables at the numerical level corresponds to standard
multiple regression analysis.
To Obtain a Categorical Regression
From the menus choose:
Analyze
Regression
Optimal Scaling…
Figure 2.1 Categorical Regression dialog box
Select the dependent variable and independent variable(s).
Click OK.
Optionally, change the scaling level for each variable.