IBM SPSS COMPLEX SAMPLES 19 Manual

A SERVICE OF

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Chapter 10

By default, the Complex Samples Logistic Regression procedure makes the highest-valued

category the reference category. This dialog box allows you to specify the highest value, the

lowest value, or a custom category as the reference category.

Complex Samples Logistic Regression Model

Figure 10-3

Logistic Regression Model dialog box

Specify Model Effects. By default, the procedure builds a main-effects model using the factors

and covariates speciﬁed in the main dialog box. Alternatively, you can build a custom model that

includes interaction effects and nested terms.

Non-Nested Terms

For the selected factors and covariates:

Interaction. Creates the highest-level interaction term for all selected variables.

Main effects. Creates a main-effects term for each variable selected.

All 2-way. Creates all possible two-way interactions of the selected variables.