ATI RN
Epidemiologic Question Questions
Question 1 of 5
Which best describes the advantage of the web of causation model in comparison with the epidemiological triangle model?
Correct Answer: D
Rationale: Although it is a more recently created model, the web of causation model is more useful because it illustrates the complexity of relationships among causable variables. It is not easier to understand and use as it has more variables than the three (agent, host, and environment) in the epidemiological model.
Question 2 of 5
Which factors are necessary to assume there might be a cause-effect relationship between a particular variable A and a specific illness? (Select One that does not apply.)
Correct Answer: C
Rationale: There are six criteria for assuming possible causation including strength of the association, dose-response relationship, temporally correct relationship, biological plausibility, consistency among studies, and specificity. Only the 'easy-to-understand,' consistent research studies and the increased dose leading to increased illness are consistent with those six criteria.
Question 3 of 5
Who is known as the father of modern epidemiology?
Correct Answer: A
Rationale: John Snow (A) is credited as the father of modern epidemiology for his cholera outbreak investigation in 1854, linking water sources to disease spread. Koch (B) and Pasteur (C) advanced microbiology, while Jenner (D) pioneered vaccination.
Question 4 of 5
Which of the following is an example of a vector-borne disease?
Correct Answer: B
Rationale: Malaria (B) is vector-borne, transmitted by mosquitoes. Tuberculosis (A), influenza (C), and measles (D) are airborne or direct-contact diseases.
Question 5 of 5
Which term describes the occurrence of more cases of a disease than expected in a given area or among a specific group of people?
Correct Answer: B
Rationale: Epidemic (B) is excess cases beyond expected (e.g., flu outbreak). A is normal, C is global, D is occasional.