ATI RN
Epidemiology Exam Questions Questions
Question 1 of 5
What is the effect of using a lower cutoff point in a diagnostic test?
Correct Answer: C
Rationale: Lower cutoff (C) increases sensitivity (more positives) but decreases specificity (more false positives). A, B, and D defy trade-off.
Question 2 of 5
What does a dose-response relationship indicate in epidemiology?
Correct Answer: C
Rationale: Dose-response (C) shows risk rising with exposure (e.g., more smoking, more cancer). A, B, and D misinterpret.
Question 3 of 5
Which of the following bacteria is the most common cause of bacterial meningitis in children 3 months to 6 years of age in the United States?
Correct Answer: A
Rationale: Post-Hib vaccine, S. pneumoniae leads in this age group.
Question 4 of 5
Overconsumption of refined sugar has been shown to cause
Correct Answer: D
Rationale: Sugar contributes to obesity indirectly; no direct causation for B-D.
Question 5 of 5
Cystic fibrosis is a genetic disorder of eccrine and exocrine gland function. All the following statements about cystic fibrosis are true EXCEPT
Correct Answer: D
Rationale: High sweat chloride confirms CF, not absence.