A community health nurse is preparing an in-service for staff to define the conditions of causation in epidemiology studies. Which of the following descriptions should the nurse use to define a cessation of exposure to establish causation?
"When the exposure is decreased or eliminated, the risk of disease declines or is eliminated."
"The exposure must come before the disease develops.
"A relationship is biologically possible, and it makes sense."
"Increased exposure increases the risk of developing the disease."
The Correct Answer is A
Choice A: "When the Exposure is Decreased or Eliminated, the Risk of Disease Declines or is Eliminated."
This statement accurately describes the concept of cessation of exposure in establishing causation. According to the Bradford Hill criteria, if a factor is truly causal, reducing or eliminating exposure to that factor should lead to a decrease in the incidence of the disease. This principle helps to confirm the causal relationship between the exposure and the disease.
Choice B: "The Exposure Must Come Before the Disease Develops."
This statement refers to the temporal relationship criterion in the Bradford Hill criteria, which states that for an exposure to be considered causal, it must precede the onset of the disease. While this is an important aspect of establishing causation, it does not specifically address the concept of cessation of exposure.
Choice C: "A Relationship is Biologically Possible, and it Makes Sense."
This statement pertains to the biological plausibility criterion, which suggests that the observed association between an exposure and a disease should be consistent with existing biological and medical knowledge. While biological plausibility is crucial for establishing causation, it does not directly relate to the cessation of exposure.
Choice D: "Increased Exposure Increases the Risk of Developing the Disease."
This statement describes the dose-response relationship, another criterion in the Bradford Hill framework. It indicates that a greater level of exposure to a risk factor should correspond to a higher risk of developing the disease. Although this is an important aspect of causation, it does not specifically address the cessation of exposure.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A: Incubation Period
The incubation period refers to the time between exposure to an infectious agent and the appearance of symptoms. During this stage, the pathogen is multiplying within the host, but there are no visible signs or symptoms of the disease. Primary prevention methods, such as education about safe sex practices and vaccination, are not typically associated with this stage because they aim to prevent the initial exposure to the pathogen.
Choice B: Stage of Clinical Illness
The stage of clinical illness is when the disease manifests with recognizable symptoms and signs. At this point, the focus is often on secondary prevention (early detection and treatment) and tertiary prevention (managing symptoms and preventing complications). Primary prevention methods are less relevant during this stage because the goal is to prevent the disease from occurring in the first place, rather than managing it after symptoms appear.
Choice C: Stage of Recovery, Disability, or Death
This stage represents the outcomes of the disease, where the individual either recovers, experiences long-term disability, or dies. Interventions at this stage are typically tertiary prevention measures, aimed at rehabilitation and reducing the impact of the disease. Primary prevention methods are not applicable here, as they are intended to prevent the disease from occurring initially.
Choice D: Stage of Susceptibility
The stage of susceptibility is the period before the disease process begins, where individuals are at risk of developing the disease. Primary prevention methods are most effective during this stage, as they aim to reduce the risk of exposure to the pathogen and enhance the individual's resistance to infection. Examples include education on safe sex practices, vaccination, and promoting healthy behaviors to prevent sexually transmitted infections⁴⁵.
Correct Answer is C
Explanation
Choice A Reason:
The first step assists with how to perform a collection of evidence. While collecting evidence is an important part of many toolkits, the University of Kansas toolkit is specifically designed to guide users through a comprehensive process. The focus is on a structured approach rather than just the initial step of evidence collection.
Choice B Reason:
It is used in planning community initiatives. This statement is true but not specific enough to be the standout feature of the toolkit. Many toolkits are used for planning community initiatives. The unique aspect of the University of Kansas toolkit is its structured, step-by-step methodology, which sets it apart from other resources.
Choice C Reason:
It uses a step-by-step approach. This is the correct answer because the University of Kansas toolkit is designed to provide a clear, structured process for users. This approach ensures that all necessary steps are followed systematically, making it easier for community groups to plan and implement their initiatives effectively. The step-by-step methodology is a core feature that enhances the usability and effectiveness of the toolkit.
Choice D Reason:
It is a proprietary document that is used solely within the state of Kansas. This statement is incorrect. The toolkit provided by the University of Kansas is intended for broader use and is not restricted to the state of Kansas. It is designed to be a resource for community groups and organizations regardless of their location, promoting best practices in community planning and development.
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