40.1 Configure the Model for Patient Tracking

The model Markov.Cancer.PatientTracking.trex is configured for Patient Tracking via Tree Preferences. Let's examine the settings.

The preferences above are used to turn on/off the recording of time data and to determine what data items to store.

• Activate patient tracking...: Check to turn on patient tracking. Turn this off when you are finished with the reporting as this option significantly slows down analyses.

• Skip records without data updates: Check this to limit the number of records stored in the database by skipping records when data has not changed. (We do NOT recommend you check this box).

• Data Items: Check all the data items you want stored for reporting.

With the selections above, all model data will be recorded.

If you want to store the value of a variable or keyword with Patient Tracking data, use a tracker and set the tracker value to the variable/keyword you want stored. Then include the tracker in Patient Tracking preferences. In this model, the t_state tracker is used to store the value of the _state_index keyword by cycle at each health state.