A user-centered model for web site design: needs assessment, user interface design, and rapid prototyping

Abstract

As the Internet continues to grow as a delivery medium for health information, the design of effective Web sites becomes increasingly important. In this paper, the authors provide an overview of one effective model for Web site design, a user-centered process that includes techniques for needs assessment, goal/task analysis, user interface design, and rapid prototyping. They detail how this approach was employed to design a family health history Web site, Health Heritage <www.healthheritage.net>. This Web site helps patients record and maintain their family health histories in a secure, confidential manner. It also supports primary care physicians through analysis of health histories, identification of potential risks, and provision of health care recommendations. Visual examples of the design process are provided to show how the use of this model resulted in an easy-to-use Web site that is likely to meet user needs. The model is effective across diverse content arenas and is appropriate for applications in varied media.

Figure 1

User-centered design model.

Figure 2

Goal/task analysis. The flow diagram depicts the upper level of our task analysis for primary care physicians (PCPs).

Figure 3

Second design challenge: structure of the Health Heritage site.

Figure 4

Heuristic issues rating scale.

Figure 5

Evolution of the paper prototype for the patient's home page.

Figure 6

Final version of the patient's home page.