A public health nurse is participating in a research study to determine how virulent a new virus is. Which of the following mortality measures should the nurse use to calculate this data?
Cause-specific mortality rate
Age-specific mortality rate*
Proportionate mortality
Case fatality
The Correct Answer is D
Choice A Reason:
The cause-specific mortality rate measures the number of deaths attributed to a specific cause within a population during a given time period. While this measure is useful for understanding the impact of a particular disease on a population, it does not directly indicate the virulence of a virus. Virulence refers to the severity or harmfulness of a disease, which is better captured by the case fatality rate.
Choice B Reason:
The age-specific mortality rate calculates the number of deaths within specific age groups in a population. This measure helps identify age-related mortality trends but does not provide information about the virulence of a virus. Age-specific mortality rates are more useful for understanding the impact of diseases across different age demographics rather than assessing the severity of a new virus.
Choice C Reason:
Proportionate mortality refers to the proportion of deaths in a population attributable to a specific cause relative to all deaths. This measure helps in understanding the relative importance of different causes of death but does not directly measure the virulence of a virus. Proportionate mortality is more about the distribution of causes of death rather than the severity of a particular disease.
Choice D Reason:
Case fatality rate (CFR) is the most appropriate measure for determining the virulence of a new virus. CFR is calculated by dividing the number of deaths caused by the disease by the number of diagnosed cases of the disease, then multiplying by 100 to get a percentage. This measure directly indicates the lethality of the virus by showing the proportion of diagnosed cases that result in death. It is a critical indicator for assessing the severity and potential impact of a new infectious disease.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Autonomy refers to respecting an individual's right to make their own decisions. In the context of healthcare, it means allowing patients to make informed choices about their own care. While autonomy is an important ethical principle, it is not the primary focus when considering the balance of benefits and harms in a community-wide intervention.
Choice B Reason:
Beneficence is the ethical principle that involves acting in the best interest of others by promoting good and preventing harm. In this scenario, the nurse demonstrates beneficence by ensuring that the benefits of the physical activity program substantially outweigh any potential harms. This principle is central to public health initiatives, where the goal is to enhance the well-being of the community.
Choice C Reason:
Nonmaleficence is the principle of "do no harm." It emphasizes the importance of not causing harm to others. While nonmaleficence is closely related to beneficence, the focus in this scenario is on the positive impact of the intervention (beneficence) rather than solely avoiding harm (nonmaleficence).
Choice D Reason:
Justice refers to fairness and equality in the distribution of resources and treatment. It ensures that all individuals have equal access to healthcare and that no group is unfairly disadvantaged. Although justice is a crucial ethical principle, the scenario specifically highlights the balance of benefits and harms, which aligns more closely with beneficence.
Correct Answer is D
Explanation
Choice A Reason:
Considering the individual characteristics first focuses on personal attributes such as age, gender, genetics, and personal health behaviors. While these factors are important, the ecological model emphasizes the broader context in which individuals live. Starting with individual characteristics may overlook the larger environmental and social influences that significantly impact health outcomes.
Choice B Reason:
Close social circles, including family, friends, and immediate social networks, play a crucial role in shaping health behaviors and providing support. These relationships can influence lifestyle choices, stress levels, and access to resources. However, focusing on close social circles first may not capture the broader environmental and societal factors that also affect health.
Choice C Reason:
Social and cultural factors encompass the norms, values, and practices of the community. These factors influence health behaviors, access to healthcare, and overall well-being. While social and cultural factors are vital, they are part of a larger context that includes the physical environment. Addressing these factors without considering the environment may provide an incomplete picture of the community's health.
Choice D Reason:
The environment includes the physical, social, and economic conditions in which people live. This encompasses factors such as housing quality, access to green spaces, pollution levels, and availability of healthcare services. The environment sets the stage for individual and community health by influencing exposure to risks and access to resources. Starting with the environment provides a comprehensive understanding of the context in which individuals and communities operate, making it the most appropriate starting point for an ecological assessment.
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