You can create a new logical variable and save it in a codebook for subsequent analyses on an ongoing basis. For example, you can create a set of demographic categories to analyze target audiences, etc.
To create a logical variable, open the database and click the Project settings (cog) icon to open the Meta-Editor.
In the Meta-Editor, click the 'snowman' icon;
Select a 'Create Logical variable' option from the dropdown list;
In the pop-up window enter a variable name, then click OK.
Find the new variable in the codebook and select it - it will usually be placed at the bottom of the list. Then, click the ‘Edit’ icon to open the Logical Expression Builder (LEB) window;
In the Logical Expression Builder, the codebook is displayed on the left-hand panel. Drag and drop codes onto the ‘Categories’ panel to build the logical variable, combining them with the appropriate logical operators.
For example, to create the audience of ‘Women age 40+’, you should OR-join the age categories of 40-49 and 50+, then drop ‘female’ onto this and select AND-join.
Changes are saved automatically.
You can also build codes (logical expressions) directly in crosstab, although these are not saved permanently within the codebook like logical variables.