A researcher wants to study the effects of exposure to high levels of nuclear radiation on neurologic diseases. Considering that exposure to high levels of nuclear radiation is rare, which study design is optimal? a) Population-based cohort b) Exposure-based cohort c) Cross-sectional study d)
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A researcher wants to study the effects of exposure to high levels of nuclear radiation on neurologic diseases. Considering that exposure to high levels of nuclear radiation is rare, which study design is optimal?
a) Population-based cohort
b) Exposure-based cohort
c) Cross-sectional study
d)
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- What are the three types of study designs used in GWAS? Provide a specific example of a study performed in research using one of these methods. Why was this study design chosen over the other two methods?The following is an example of what kind of study? Participants are recruited based on exposure status as ascertained through historical records (medical records or other records from the past), disease status is determined after recruitment, and risk of disease among the exposed is then compared with risk in the unexposed. a) Ecological study b) cross-sectional study c) case control study d) cohort study e) randomized control trialIn December 2020, a survey of 12,000 residents in Assisted Living Facilities (ALF) between 60 and 90 years old in Kentucky revealed that there were 600 cases of Covid-19 including 325 hospitalizations. Among those hospitalized were 200 women. The total population of Kentucky is 5,000,000. What is the prevalence of Covid-19 in ALF per 1,000 residents?
- A researcher enrolled 100 subjects into a study on September 1, 2000. All of the subjects were at risk for developing Influenza A. On November 1, 2000, 10 subjects developed Influenza A. On December 1, 2000, 10 more subjects developed Influenza A. None of the remaining subjects developed Influenza A and none of these subjects left the study. The study ended on March1, 2001. Calculate the incidence density of Influenza A from September 1, 2000 to March 1, 2001. Show your work.Lead time bias is best described as a. an apparently lower survival rate among persons screened compared to an unscreened group b. a similar survival time for persons identified during a screening program relative to persons who are diagnosed by clinical symptoms c. an apparently longer survival time among persons identified during a screening program because they were identified at an earlier stage of their disease d. a truly longer survival time for persons identified during a screening program because they were given an effective treatmentWhat is the reasoning for ALP values in young adults and chidlren being double the values of adults. Both of the populations are free of underlying disease?
- When confronted with evidence of health inequities, many people from United States respond that the outcomes are unfortunate but not necessarily unjust. (a) Define the term "just". (b) Do you agree or disagree that the outcomes are not necessarily unjust? Explain why or why not.Large international variations in rates of communicable diseases, undernutrition, and maternal and child deaths can be explained by all of the following except: a. differences in cultural factors b. genetic factors c. differences in climate d. access to health careDescribe an opportunistic life history strategy.
- Please answer this question What are the government and RT role during mass casualty.In response to Covid-19, which may violate individual privacy, countries have implemented measurement and management procedures. In the event of future crises, how should nations balance the needs of public health and individual privacy?The epidemiological or disease triangle is a model of disease causation that proposes three factors contribute to an outbreak – an agent that causes the disease, a susceptible host, and an environment that brings the host and agent together. Some general changes within these three factors that may cause an infectious disease to emerge include: A. changes in populations or behavior of reservoir hosts or intermediate hosts B. microbial genetic mutation and viral genetic recombination or assortment C. environmental factors such as an increase in precipitation D. all of the above E. none of the above