A public health nurse is educating a newly licensed nurse about sensitivity and specificity using a two-by-two table. Which of the following statements by the newly licensed nurse indicates an understanding of the table related to true positives?
"True positives are represented in the table cell that indicates the person does not have the disease and the test indicates disease."
"True positives are represented in the table cell that indicates the person has the disease and the test indicates the person has the disease."
"True positives are represented in the table cell that indicates the person has the disease and the test does not indicate disease."
"True positives are represented in the table cell that indicates the person does not have the disease and the test does not indicate disease."
The Correct Answer is B
Choice A: "True Positives are Represented in the Table Cell that Indicates the Person Does Not Have the Disease and the Test Indicates Disease."
This statement is incorrect. In a two-by-two table used to evaluate diagnostic tests, the cell representing true positives is where both the test result and the actual disease status are positive. This cell indicates that the test correctly identified individuals who have the disease. The statement here describes a false positive, where the test indicates disease, but the person does not actually have it.
Choice B: "True Positives are Represented in the Table Cell that Indicates the Person Has the Disease and the Test Indicates the Person Has the Disease."
This statement is correct. True positives are indeed represented in the cell where both the test result and the actual disease status are positive. This means the test has correctly identified individuals who have the disease. This cell is crucial for calculating the sensitivity of the test, which measures the proportion of actual positives correctly identified by the test.
Choice C: "True Positives are Represented in the Table Cell that Indicates the Person Has the Disease and the Test Does Not Indicate Disease."
This statement describes a false negative, where the person has the disease, but the test fails to detect it. This cell is used to calculate the test's sensitivity, but it does not represent true positives. False negatives are critical to understand because they indicate cases where the test missed the disease.
Choice D: "True Positives are Represented in the Table Cell that Indicates the Person Does Not Have the Disease and the Test Does Not Indicate Disease."
This statement describes true negatives, where the test correctly identifies individuals who do not have the disease. While true negatives are important for calculating the specificity of the test, they do not represent true positives. Specificity measures the proportion of actual negatives correctly identified by the test.
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Related Questions
Correct Answer is D
Explanation
Choice A Reason:
The lack of government-provided health insurance is a general issue that can affect both rural and urban populations. While it is a significant concern, it is not specific to rural communities. Government-provided health insurance programs, such as Medicaid and Medicare, are available to eligible individuals regardless of their location.
Choice B Reason:
The financial risk that is typical of underinsured clients is another broad issue affecting many individuals, both in rural and urban settings. Underinsurance can lead to significant out-of-pocket expenses and financial strain, but it is not unique to rural areas. This issue is more related to the overall health insurance market and coverage policies.
Choice C Reason:
Limited availability of managed care insurance can be a problem in rural areas due to fewer healthcare providers and facilities participating in managed care networks. However, this issue is not as critical as the direct access to primary care providers. Managed care insurance availability can vary widely, but the core issue in rural areas is often the physical presence of healthcare services.
Choice D Reason:
Limited access to primary care providers is a significant disadvantage specific to rural communities. Rural areas often face shortages of healthcare professionals, including primary care providers, which can lead to longer travel distances for medical care, longer wait times for appointments, and overall reduced access to essential health services. This lack of access can result in delayed diagnoses and treatment, poorer health outcomes, and increased reliance on emergency services for primary care needs.
Correct Answer is C
Explanation
Choice A Reason:
Data analysis involves examining and interpreting the collected data to identify patterns, trends, and relationships. This stage includes statistical analysis, creating comparative tables, and computing measures of association such as risk ratios or odds ratios. While crucial, this stage comes after the conceptualization and design phase.
Choice B Reason:
Conduct/implementation refers to the actual execution of the study, including data collection and ensuring that the study follows the designed protocol. This stage involves gathering data from participants, ensuring compliance with ethical standards, and managing the logistics of the study. It follows the conceptualization and design phase.
Choice C Reason:
Conceptualization/design is the initial stage of an analytic study where the research question is defined, hypotheses are generated, and the study design is developed. This stage involves planning the methodology, selecting the study population, and determining the data collection methods. The nurse's involvement in this stage indicates participation in the foundational planning and structuring of the study.
Choice D Reason:
Interpretation of findings involves analyzing the results of the data analysis to draw conclusions and make recommendations based on the study's outcomes. This stage includes discussing the implications of the findings, identifying limitations, and suggesting areas for further research. It is one of the final stages of the study process.
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