Texas Registered Sanitarian - Quick Epidemiology Review Exam Questions With 100% Correct Answers

Texas Registered Sanitarian - Quick Epidemiology Review Exam Questions With 100% Correct Answers What is epidemiology? - answerEpidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems. What is a case definition? - answerA case definition is a set of standard criteria for classifying whether a person has a particular disease, syndrome, or other health condition Describe the difference between descriptive and analytic epidemiology - answerDescriptive epidemiology provides a way of organizing and analyzing data on health and disease in order to understand variations in disease frequency geographically and over time and how disease varies among people based on a host of personal characteristics (person, place, and time). Analytic epidemiologic studies measure the association between a particular exposure and a disease, using information collected from individuals, rather than from the aggregate population. What is a cohort study? - answerIn a cohort study the epidemiologist records whether each study participant is exposed or not, and then tracks the participants to see if they develop the disease of interest What is a case-control study? - answerIn a case-control study, investigators start by enrolling a group of people with disease (at CDC such persons are called case-patients rather than cases, because case refers to occurrence of disease, not a person). As a comparison group, the investigator then enrolls a group of people without disease (controls). Investigators then compare previous exposures between the two groups. What is a cross-sectional study? - answerA sample of persons from a population is enrolled and their exposures and health outcomes are measured simultaneously. The cross-sectional study tends to assess the presence (prevalence) of the health outcome at that point of time without regard to duration.