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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A: Proportionate Mortality
Proportionate mortality refers to the proportion of deaths in a specified population over a period of time attributable to different causes. It is expressed as a percentage of the total number of deaths. While this measure can provide insight into the relative importance of different causes of death, it does not give the actual mortality rate for each cause. Therefore, it is not the best measure for identifying the top three causes of death in a county.
Choice B: Crude Mortality Rate
The crude mortality rate is the total number of deaths from all causes per 1,000 or 100,000 population in a given year. This measure provides an overall picture of the mortality level in a population but does not specify the causes of death. It is useful for general mortality trends but not for identifying specific causes of death.
Choice C: Cause-Specific Mortality Rate
The cause-specific mortality rate is the number of deaths from a specific cause per 100,000 population in a given year. This measure is the most appropriate for identifying the top three causes of death because it provides detailed information on the mortality rate for each specific cause. By calculating the cause-specific mortality rates, the nurse can determine which causes are the most significant contributors to mortality in the county.
Choice D: Case Fatality
Case fatality refers to the proportion of individuals diagnosed with a particular disease who die from that disease within a specified period. It is usually expressed as a percentage. While case fatality provides information on the severity of a disease, it does not give the overall mortality rate for the population or help identify the top causes of death.
Correct Answer is D
Explanation
Choice A: Implementing the Teach Back Method When Prescribing Medication
The Teach Back Method is an effective communication strategy where healthcare providers ask clients to repeat back the information given to ensure understanding. While this method can improve medication adherence and health literacy, it does not directly address the broader systemic issues related to poverty. It is a useful tool but not the most impactful intervention for breaking the cycle of poverty.
Choice B: Replacing Medicare Programs with Medigap Policies
Medigap policies are supplemental insurance plans that cover costs not included in traditional Medicare. However, replacing Medicare programs with Medigap policies would not necessarily improve outcomes for clients impacted by poverty. Medigap policies can be expensive and may not be affordable for low-income individuals. This intervention does not address the root causes of poverty or improve access to essential health services.
Choice C: Eliminating the Use of Client Portals or Virtual Visits
Eliminating client portals or virtual visits would likely have a negative impact on client outcomes, especially for those in poverty who may have limited access to transportation. Virtual visits and client portals provide convenient access to healthcare services, allowing clients to communicate with providers, access medical records, and receive care without the need for in-person visits. Removing these options would reduce access to care for many individuals.
Choice D: Opening a Community Health Center in an Underserved Area
This is the correct choice. Opening a community health center in an underserved area directly addresses the lack of access to healthcare services, which is a significant barrier for individuals living in poverty. Community health centers provide comprehensive primary care, preventive services, and support for managing chronic conditions. They often offer sliding scale fees based on income, making healthcare more affordable and accessible for low-income populations. By improving access to healthcare, community health centers can help break the cycle of poverty and improve overall health outcomes.
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