The Client Outcomes report lists the data that client outcomes are based on, not actual client outcomes. For actual client outcomes use the Client Outcomes Summary report. The Client Outcomes Summary works by finding the first and last items for each client given a data range, and then averaging the difference of all the values. Special handling happens if "Discharge" is selected for "Last Event".

The process for generating client outcomes is based on capturing the data your organization wants to base client outcomes on, and that is accomplished in different ways based on what kind of data is needed. By default data is pulled from treatment plans and discharge summaries, and consists mainly of various scores like ACE, CAR, and CATS. Capturing outcome data entails some overhead, so it is disabled by default.