Midterm Exam: NR503/ NR 503 (2023/ 2024 Update) Population Health, Epidemiology & Statistical Principles Exam Review | 100% Correct| Complete Guide with Questions and Verified Answers| A Grade - Chamberlain

Midterm Exam: NR503/ NR 503 (2023/ 2024 Update) Population Health, Epidemiology & Statistical Principles Exam Review | 100% Correct| Complete Guide with Questions and Verified Answers| A Grade - Chamberlain QUESTION How does a provider determine the usefulness, appropriateness, of a screening test? Where would and NP look to find a screening test? What determines if a screening test should be used? Answer: Determining whether a screening test is appropriate requires the APRN to address several aspects of the disease of interest. The target population needs to be identifiable. There should be enough people to make the study cost effective. The preclinical period should be proficient to allow treatment before symptoms appear so that early diagnosis and treatment make a difference in terms of outcomes. The NP could look at the U.S. Preventative Services Task Force, Agency for Healthcare Research and Quality, and SAMHSA-HRSA to find a screening test. Sensitivity and specificity measure the validity of a test. Sensitivity is the number identified/ the number affected. Specificity is the number identified in the screening of not having the disease/ the actual number who do not have the disease. QUESTION Can you explain what "descriptive epidemiology" means? What is the purpose? How is it used? Answer: It covers time place and person. First, by looking at the data carefully, the epidemiologist becomes very familiar with the data. He or she can see what the data can or cannot reveal based on the variables available, its limitations (for example, the number of records with missing information for each important variable), and its eccentricities (for example, all cases range in age from 2 months to 6 years, plus one 17-yearold.). Second, the epidemiologist learns the extent and pattern of the public health problem being investigated — which months, which neighborhoods, and which groups of people have the most and least cases. Third, the epidemiologist creates a detailed description of the health of a population that can be easily communicated with tables, graphs, and maps. Fourth, the epidemiologist can identify areas or groups within the population that have high rates of disease. This information in turn provides important clues to the causes of the disease, and these clues can be turned into testable hypotheses. QUESTION How are causation and descriptive epidemiology related, how do they work together to aid evidence-based care? Answer: ______________- helps look at the cause of the issue or disease process. ________ ________ focuses on the person, place, and time. An example of how they are intertwined might be a person who was sick from E. Coli. The physician might look at what the individual ate to determine what made them sick. For instance, they may have decided to eat from the salad bar at a local restaurant. QUESTION What does "causation" mean? Can you relate causation to primary, secondary and tertiary interventions? Answer: is an increase in a casual factor or exposure causes an increase in the outcome of interest (disease). It is related to primary intervention could be the use of flu vaccines yearly to prevent the flu from causing an illness. A secondary intervention would be to test for the influenza virus in a patient. A tertiary intervention would be giving Tamiflu to a flu positive patient. Since we know that the influenza virus causes the flu when can