A case study makes use of limited number of cases and controls who usually do not represent an entire cohort of exposed individuals. B the measurement of exposure may be inaccurate. Representativeness of cases and controls may be unknown and may provide indirect estimates of risk. The temporal relationship between exposure factor and outcome cannot always be determined.
Describe the disadvantages of the case control study A. A cohort is different because an entire cohort of exposed individuals is examined. A case study makes use of limited number of cases and controls who usually do not represent an entire cohort of exposed individuals.
Representativeness of cases and controls may be unknown and may provide indirect estimates of risk. The temporal relationship between exposure factor and outcome cannot always be determined.
For an observational designed study, the observer does not have control over the exposure factor. Mostly, cannot assign subjects by random to certain study conditions.
For an experimentally designed study the observer can control who is exposed to certain factors and is able to assign subjects by random to certain study groups. Describe the uses of analytic studies A. They help lead to the prevention of disease, create quantitative evaluations of intervention programs as well as determine safe and effective new drugs, and other procedures.
This is something that describes the negative because you cannot always take the findings from group data and apply it to individuals. This can be referred to as an Ecological Comparison Study. Identify an example of a case control study A.
An example may be possible health effects of exposure to electromagnetic fields. Allowance of the direct observation of risk. The exposure factor is well defined and can study exposures that are uncommon in the population.
The temporal relationship between factor and outcome is known. Describe the advantages of the case control study A. The ecologic fallacy and imprecise measurement of exposure.
The procedure is mostly quick and easy to complete, and is inexpensive. Lastly, the number subjects needed are smaller. Refers to the difference between the incidence rate of a disease in the exposed group and the incidence rate in the non-exposed group.
Attributable risk is the difference between two incidence rates. Explain the ecologic fallacy A. Conduct the program several times in a variety of settings with a variety of participants. This refers to the adoption of policies, laws, and programs that are supported by empirical data.
One of the most reliable forms of evidence will come from randomized controlled trials. Contrast the 2 categories of analytic studies A. This test can be used to test between two medical tests themselves.
Which one is most efficient and yields the best results. This is the association between two variables, the exposure and the outcome, and are measured at the group level. Describe the ecologic correlation A. It is the best because if the sensitivity test correctly identifies all potential cases as either negative or positive.
A clinical trial refers to a research activity that involves the administration of a test regimen to humans to evaluate its efficacy and safety. Explain the ecologic study A. This is beneficial because an association can be found between exposure rates and disease rates during the same time period.
Describe the drawbacks of the ecologic study A. Mass screening is defined as the standards of care, anyone that could at risks should be screened for exposure. Describe the benefits of the ecologic study A.
Explain the population risk difference A.
This is the difference between the rate of disease in the nonexposed segment of the population and the overall rate in the population. These are a form of intervention studies, two types are randomized controlled trials and quasiexperiments Ans: Explain experimental studies A.
These are a form of intervention studies, two types are randomized controlled trials and quasiexperiments C.Principles of Epidemiology in Public Health Practice, Third Edition If you were given the appropriate raw data, would you be able to answer these two questions confidently?
The materials in this lesson will allow you do so — and more. Objectives. Practice Quiz for Epidemiology: No. of Questions= INSTRUCTIONS: To answer a question, click the button in front of your choice.
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Be sure to read the feedback. It is designed to help you learn the material. Epidemiology Questions and Answers An outbreak of gastritis occurred on a cruise ship.
Please take the quiz to rate it. An outbreak of gastritis occurred on a cruise ship. The data in the following table were obtained shortly after the outbreak, from a questionnaire completed by everyone on board the ship. What is the relative risk of developing gastritis from herring consumption /5. Epidemiology Research Studies. Epidemiology is the study of health in populations to understand the causes and patterns of health and illness. The Epidemiology Program, a research division of VA’s Office of Patient Care Services, conducts epidemiology research studies and surveillance (the collection and analysis of data) on the health of Veterans. The Department of Epidemiology with its degree programs and its close alliance to the Summer Program in Clinical Effectiveness is the training hub for Clinical Epidemiology research in the Harvard Teaching Hospitals and other locations.
More chapters in Epidemiology for the uninitiated. Epidemiology is the study of how often diseases occur in different groups of people and why.
Epidemiological information is used to plan and evaluate strategies to prevent illness and as a guide to the management of patients in whom disease has already developed.
Nov 28, · Latest Epidemiology Multiple Choice Questions and Answers for pdf free download 1. All of the following are true of odds ratio except: A.