Designing a medication timeline for patients and physicians.

Objective: Most electronic health records display historical medication information only in a data table or clinician notes. We designed a medication timeline visualization intended to improve ease of use, speed, and accuracy in the ambulatory care of chronic disease. Materials and Methods: We identified information needs for understanding a patient medication history, then applied human factors and interaction design principles to support that process. After research and analysis of existing medication lists and timelines to guide initial requirements, we hosted design workshops with multidisciplinary stakeholders to expand on our initial concepts. Subsequent core team meetings used an iterative user-centered design approach to refine our prototype. Finally, a small pilot evaluation of the design was conducted with practicing physicians. Results: We propose an open-source online prototype that incorporates user feedback from initial design workshops, and broad multidisciplinary audience feedback. We describe the applicable design principles associated with each of the prototype's key features. A pilot evaluation of the design showed improved physician performance in 5 common medication-related tasks, compared to tabular presentation of the same information. Discussion: There is industry interest in developing medication timelines based on the example prototype concepts. An open, standards-based technology platform could enable developers to create a medication timeline that could be deployable across any compatible health IT application. Conclusion: The design goal was to improve physician understanding of a patient's complex medication history, using a medication timeline visualization. Such a design could reduce temporal and cognitive load on physicians for improved and safer care.

Dynamic Electronic Health Record Note Prototype: Seeing More by Showing Less.

INTRODUCTION: Cluttered documentation may contribute adversely to physician readers' cognitive load, inadvertently obscuring high-value information with less valuable information. We test the hypothesis that a novel, collapsible assessment, plan, subjective, objective (APSO) note design would be faster, more accurate, and more satisfying to use than a conventional electronic health record (EHR) subjective, objective, assessment, plan (SOAP) note for finding information needed for ambulatory chronic disease care. METHODS: We iteratively developed physician clinic note prototypes with features designed to emphasize more important information and de-emphasize less clinically relevant information. Sixteen primary care physicians reviewed comparable clinic notes with the 4 note styles presented in random order to find key information in the notes during timed tasks. The 4 note styles were denoted A (traditional SOAP note), B (2-column APSO note), C (collapsible APSO note), and D (2-column collapsible APSO note). The 4 unique note styles were designed to have equal amounts of information in each section. We simulated their utility for clinical practice by imposing time limits and by interrupting 1 of the tasks with a typical clinical interruption. For each session, we recorded audio, computer-screen activity, eye tracking, and made field notes. We obtained usability ratings (System Usability Scale), new feature preference ratings, and performed semistructured post-task interviews with subsequent content analysis. We compared the effectiveness of the 4 note styles by measuring time on task, task success (accuracy), and effort as measured by NASA Task Load Index. RESULTS: Note styles C and D were significantly faster than A and B for the Review of Systems and Physical Examination tasks, as we expected. Notes B and C had the best success (finding requested data) scores. Users strongly endorsed all the new note features incorporated into the new note prototypes. Previously expressed concerns about temporarily hiding parts of the note (using the accordion display design pattern) were allayed. Usability ratings for note A were worst but comparably better for note styles B, C, and D. DISCUSSION: The new APSO note prototypes performed better than the traditional SOAP note format for speed, task success (accuracy), and usability for physician users acquiring information needed for a typical chronic disease visit in primary care. Moving Assessment and Plan to the top is 1 easily accomplished feature change. Innovative documentation displays of EHR data can safely improve information display without eliminating data from the record of the visit.