Calculations

Calculations enable you to set the value of a data item by performing a calculation that uses the value entered in one or more related items. The data item to which the calculation is applied is a control in an item on a form, most commonly a calculated control. When the values in all dependent items are submitted or updated, the InForm application runs the calculation rule and places the result in the calculated control.

In the sample trial installed with the InForm application, the Frame Size item on the Demographics form in Visit 1 is a calculated item. This item receives the resulting value of a rule that calculates frame size by dividing the value entered in the Height item by the value entered in the Wrist Circumference item, applying a constant, and comparing the result with specified ranges.