ATI RN
Foundational Public Health Services Questions
Question 1 of 5
Activities early detecting diseases and their causes make up secondary prophylaxis. Which of the following are part of secondary prophylaxis? 1) active guidance; 2) dispanserization; 3) vaccination; 4) health checks; 5) screening; 6) epidemiological supervision over food production.
Correct Answer: D
Rationale: Secondary prophylaxis (early detection) includes guidance (1), dispanserization (2), health checks (4), and screening (5); vaccination (3) is primary prevention.
Question 2 of 5
Let us assume that a new screening test was prepared to detect ovarian cancer. The chart below shows the frequency of its results. Which of the following is true if we take as a referential value the result of 0-30 µg/dL ?
Correct Answer: C
Rationale: Without a chart, assuming a typical test, a cutoff like 0-30 µg/dL implies some overlap, leading to false positives among healthy women.
Question 3 of 5
Morbidity rate reaches higher values if:
Correct Answer: B
Rationale: Morbidity (prevalence) increases with longer disease duration as more cases accumulate.
Question 4 of 5
In the formula for calculating the specificity of the test, the following number of results is entered in the numerator of the fraction:
Correct Answer: A
Rationale: Specificity = TN / (TN + FP), with true negatives in the numerator.
Question 5 of 5
The diagram shows two distributions of the same characteristic among adult population of the towns A and B. The difference between these distributions can be numerically expressed with the use of:
Correct Answer: B
Rationale: The arithmetic mean best quantifies the central tendency difference between two distributions.