Outcome is what the "O" in OASIS is all about. Every home health agency collects OASIS data, which reflect changes in its patients' health status. Agencies submit the data electronically to their respective states that use special software to generate outcome reports. These reports help agencies identify specific ways to improve their services. This process is known as "Outcome-Based Quality Improvement." OBQI is a systematic approach to improving the care an agency provides for its patients.