What is Common-Sense Epidemiology

Encouraging patients to play a more active role in their health care is crucial for healthcare planning and for the design of services. This chapter shifts the scholarly focus from practitioners' decision making to that of laypersons' trying to make sense of the lab results available on their EPRs. The authors developed a methodology to capture the relationship between information formats (graph, numeric, or verbal), laypersons' assessment of the conditions' gravity, and their preferred course of action. Focusing on the effect of “not knowing” on laypersons' preferred courses of action, our findings show that formats that left respondents less able to understand the results—namely, the numeric and verbal formats—produced a lower sense of urgency, and correspondingly, less inclination to actively seek professional help. The chapter takes a step toward deriving practical recommendations as to how personal clinical information should be communicated, to improve laypersons' interpretation of the information's significance.