Epidemiology: Incidence and Prevalence · USMLE Step 1

Point prevalence differs from period prevalence in which way?

  1. Point prevalence measures new cases only
  2. Period prevalence excludes cases that resolve during the period
  3. Point prevalence measures cases at a single moment
  4. Period prevalence estimates only chronic diseases
Show answer and explanation

Correct answer: Point prevalence measures cases at a single moment

Point prevalence measures all cases at a specific moment in time. Period prevalence includes any case existing at any time during the period.

Difficulty: Medium Question 8 of 20

Practice all 20 Epidemiology: Incidence and Prevalence questions

Keep practicing

More Epidemiology: Incidence and Prevalence questions