The SURVEYLOGISTIC Procedure

Domain Analysis

A DOMAIN statement requests that the procedure perform logistic regression analysis for each domain.

For a domain $\Omega $, let $I_\Omega $ be the corresponding indicator variable:

\[  I_{\Omega }(h,i,j) = \left\{  \begin{array}{ll} 1 &  \mbox{if observation }(h,i,j)\mbox{ belongs to }\Omega \\ 0 &  \mbox{otherwise} \end{array} \right.  \]

Let

\[ v_{hij} = w_{hij}I_\Omega (h,i,j) = \left\{  \begin{array}{ll} w_{hij} &  \mbox{if observation } (h,i,j) \mbox{ belongs to } \Omega \\ 0 &  \mbox{otherwise} \end{array} \right.  \]

The regression in domain $\Omega $ uses v as the weight variable.