Filter formula editor

In this dialog box you can edit the formula for the filter.

E.g. if you have a variable named TREATMENT containing codes (0, 1) for the treatment given to patients, you can enter a filter as follows:

Formula:

TREATMENT=0

If TREATMENT is coded using text, e.g. A and B, then values must be placed between quotation marks.

TREATMENT="A"

You can combine different criteria into one filter using the AND() and OR() functions (see Logical functions).

When entering the formula, you can select variables and functions by double-clicking in the respective lists shown in the dialog box.

See also