Usability Test of an Internet-Based Informatics Tool for Diabetes Care Providers: The Comprehensive Diabetes Management Program

Background: Research suggests Internet-based care management tools are associated with improvements in care and patient outcomes. However, although such tools change workflow, rarely is their usability addressed and reported. This article presents a usability study of an Internet-based informatics application called the Comprehensive Diabetes Management Program (CDMP), developed by content experts and technologists. Our aim is to demonstrate a process for conducting a usability study of such a tool and to report results. Methods: We conducted the usability test with six diabetes care providers under controlled conditions. Each provider worked with the CDMP in a single session using a “think aloud” process. Providers performed standardized tasks with fictitious patient data, and we observed how they approached these tasks, documenting verbalizations and subjective ratings. The providers then completed a usability questionnaire and interviews. Results: Overall, the scores on the usability questionnaire were...