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A filter in CATI Supervisor is a ready-made expression that can be used to filter the interview/call objects. Filters are created using available variables and survey questions (which in fact are also variables) from the Forsta surveys.
Available filters are shown in the Advanced Filters tab – each row in the grid corresponds to a certain filter.
The user can manage the list of filters using controls available on the Filters tab toolbar. Operations with filters can be performed either with the help of the icons displayed above the grid, or using the context menus.
The following icons are available:
Icon | Function |
REFRESH | Manually refreshes the filter list displayed in the grid |
| CLEAR SELECTION | Deselects all the selected items in the grid |
ADD ADVANCED FILTER | Allows adding a new filter to the list. Displays the Filter Properties dialog |
PROPERTIES | Displays the Filter Properties dialog and allows the properties to be edited |
REMOVE FILTER | Removes the selected filter from the list |
| COPY/MOVE FILTERS FROM SURVEY | Displays the Copy/Move Filters dialog that allows to choose the survey from which all filters would be moved/copied |
The user can create two types of filters: site and survey specific. A site specific filter condition cannot contain a variable. After they are created, the site specific filters are available for use with any survey. On the contrary, a filter containing a survey variable in its expression, can only be used with the survey for which it was created - this is a survey specific filter.
Also the toolbar contains the Show all filters checkbox. When this box is checked, the list in the Filters tab will contain all site specific filters, and when the box is cleared, the filter list will contain only filters pertaining to the currently selected survey.