Table 3.

Identified information needs and design elements to address those needs

Identified Information Needa	Design Element
Distinguish systolic from diastolic data points	Color differentiation
Visualize clinic home blood pressure data	Include both on visualization
Differentiate clinic and home data	Different symbols for sources
Contextual information about lifestyle and clinical events	Annotations
Relationship between medication and blood pressure	Blood pressure graph stacked with medication timeline
Understanding of blood pressure goals	Shaded goal ranges, default to those appropriate for patients age and comorbidity
Visualize out of range values	Shaded goal ranges were deemed sufficient, several ways of further highlighting out of range values were rejected by both groups
Customizable goal ranges	Customization using radio buttons corresponding to common guidelines
See the raw data	Include stacked data table
Patient burden for data entry	Automated data upload from device
Understand variable blood pressure data	Lowess smoothing line
Understand flow of data to care team	Future design of workflow adaptations for comprehensive hypertension care

^a All identified needs were expressed by both physicians and patients with the exception of customizable goal ranges, which was identified solely by physicians