ATI RN
Questions in Epidemiology Questions
Question 1 of 5
A specific case definition is one that: (Choose one wrong answer)
Correct Answer: B
Rationale: A specific case definition aims for true positives (A) and may miss mild cases (D). 'Loose' or 'broad' (B) describes a sensitive definition, not a specific one.
Question 2 of 5
The algebraic relationship between the variance and standard deviation is that:
Correct Answer: A
Rationale: The standard deviation is mathematically defined as the square root of the variance.
Question 3 of 5
The crude mortality rate in Community A was higher than the crude mortality rate in Community B, but the age-adjusted mortality rate was higher in Community B than in Community A. This indicates that:
Correct Answer: C
Rationale: Age-adjustment corrects for age distribution; A’s higher crude rate and lower adjusted rate suggest an older population.
Question 4 of 5
To display different rates on an area map using different colors, select different colors that have the same intensity, so as not to bias the audience.
Correct Answer: A
Rationale: Using equal-intensity colors prevents visual bias in interpreting rate differences.
Question 5 of 5
Notifiable disease surveillance usually focuses on morbidity from the diseases on the list and does not cover mortality from those diseases.
Correct Answer: B
Rationale: Notifiable disease surveillance tracks both morbidity and mortality, not just morbidity.