This chapter introduces the concept of case control studies in epidemiology. Students can practice what they have learned in class with 23 questions based on real-world examples, and then use the corresponding solutions to check their work. Examples include work on ovarian cancer rates and prior use of analgesics, obesity and ovarian cancer, medication for gastric acid suppression and development of pneumonia, tubal pregnancy and prior induced abortion, testicular cancer and age at prior orchiopexy, air pollution and neural tube defects, efficacy of oral polio vaccine, cannabis use and motor vehicle accidents, and rates of melanoma of the head and neck among users of hair dye.
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