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Epidemiology is the study of the distribution and determinants of disease in human population. To determine if a new drug is beneficial for treating a disease, a randomized controlled trial, which is an interventional study, is the gold standard of epidemiologic design. In environmental epidemiology, however, “observational” studies are the main source of epidemiologic data, i.e., people are exposed through the course of their lives rather than through an experiment.
Your textbook provides examples of observational studies addressing environmental health topics. Today, epidemiologic studies are commonly published in journals devoted to environmental health as well as in medical, public health, and other types of journals.
Articles from major journals are indexed by the National Library of Medicine in a database known as Medline, which you can search by typing the word “PubMed” into your search engine.
The PubMed site permits you to find journal articles addressing specific topics. If you are not familiar with searching PubMed, you can refer to the tutorials present on the PubMed site. You can also ask South University Online Library support staff to assist you.
Click here to learn some basic guidelines for searching PubMed.
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