Georgia Department of Education
Ga Virtual Learning: Epidemiology Study Designs
In this comprehensive interactive tutorial you will learn about clinical trials and how they are an example of epidemiological study designs. You will also be introduced to case control, ecological, cohort, and cross-sectional studies.
University of North Carolina
University of North Carolina: Eric Notebook: Cross Sectional Studies [Pdf]
Explains what a cross-sectional study of a population is and how it compares with a cohort study. Its advantages, disadvantages, and limitations are discussed, and how it is used in studying health issues and risks. Includes two practice...