ATI RN
Epidemiologic Question Questions
Question 1 of 5
In most states, the legal limit for blood alcohol concentration allowed for operating a motor vehicle is
Correct Answer: B
Rationale: 0.08% BAC = 100 mg/dL in most states.
Question 2 of 5
Public health surveillance includes which of the following activities: (Choose one wrong answer)
Correct Answer: A
Rationale: Surveillance involves collecting case reports (B), graphing trends (C), and reporting data (D). Diagnosing individual cases (A) is a clinical activity, not surveillance.
Question 3 of 5
The epidemiologic triad of disease causation refers to: (Choose one best answer)
Correct Answer: A
Rationale: The triad—agent (cause), host (affected), environment (context)—explains disease causation. Other options are unrelated frameworks or people.
Question 4 of 5
The interquartile range covers what proportion of a distribution?
Correct Answer: B
Rationale: The IQR spans the middle 50% of the data, from Q1 to Q3.
Question 5 of 5
What is the following fraction? Number of deaths due to septicemia among men aged 65-74 years in 2004 / Estimated number of men aged 65-74 years alive on July 1, 2004
Correct Answer: A
Rationale: This is an age-specific mortality rate for men aged 65-74, focusing on a single age group.