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Branching Point Events
A Branching Point Event is one of nine types of Support Event (Guidance Events, Branching Point Event, Calendarize Event, Event Iterations, Event Array, Study Context Events, Unspecified Support Events, Randomized Event, and Goodbye Event.
A branching event is an event that is defined and placed in the sequence of events in the execution list of the Sequencing Window which directs the execution down alternative paths depending on the value returned for the test. Alternative paths are defined as collections of events arranged in the desired sequence. Specifically, one of the paths is followed if the test passes and the other is followed if the test fails.
To create a branching event, click on the Create menu under the Events Tab (in the Edit Protocol Page), then click Support, and then Branching Point. In the Events Table name the branching event. Click on it and scroll down to the Instrument Construction Area. On the top left, you will see the name that you gave this event. See screen shot of the construction area for the branching point event.
Defining the Test
To define the test, you will 1) select the name of the event that you will use for testing, 2) select the operator that you will use in the test, and 3) enter the value you will be testing for.
For example, To test for whether someone taking a survey is over the age of 18, you would create a branching point event and in the Define Test window, you would select the measurement event (in the first field) in which the name of the respondent was asked. Then, in the second field, you would select the operator ">=" (greater than or equal to) and then enter the number "18" in the third field. When this event is reached in the execution, if the test passes (the respondent is older than 18), then the subsequent execution would proceed down one specified path, otherwise it would proceed down the other specified field.