ABSTRACT
This chapter is designed to give you an applied view of power for the most common study designs in epidemiology and preventive medicine: cohort studies, cross-sectional studies, and unmatched case-control studies. The chapter discusses the factors that influence power, the study design strategies that you can use to maximize your power, user-friendly approaches to calculating power, and how to best display your power calculations in a proposal. Throughout the chapter, I include annotated examples with strategies and tips.
