Which system helps determine the measures matrix for HEDIS?

The Field Testing Procedure is integral in establishing the measures matrix for HEDIS (Healthcare Effectiveness Data and Information Set). This process involves the systematic testing of various healthcare performance measures to ensure their validity, reliability, and feasibility in real-world scenarios. By employing the Field Testing Procedure, organizations can gather critical insights and data to refine their measures, thereby enabling a more accurate representation of quality care in their assessments.

This approach typically includes pilot studies and various testing methods that help identify the effectiveness of the measures before they are fully implemented. It is designed to enhance the measures' overall robustness by ensuring they accurately reflect the intended healthcare outcomes.

The other options relate to data reporting and collection methodologies but do not specifically pertain to the procedural framework that directly supports the development of the measures matrix for HEDIS.