Understanding Patient Portal Uses and Needs: Cross-Sectional Study in a State Fair Setting.

This study identified 22 features that are used and the needs for desired features/data in patient portals that enable online access to medical records. Data collected at a Midwestern state fair indicates that while most participants used patient portals, use and desirability of specific features varied widely. Identified needs for enhanced data access, portal functionality, and usability can be used to inform effective patient portal design.