Public Health Quiz #7: Incidence and Prevalence

1. A study in a rural community reports that there were 50 new cases of hepatitis C diagnosed last year in a population of 5,000, where 200 individuals were already living with hepatitis C at the beginning of the year. What was the incidence rate of hepatitis C in this community last year? 

Question 1 of 5

2. A longitudinal study is conducted to understand the dynamics of type 2 diabetes in an urban setting. At the start of the study, 1,000 out of 10,000 surveyed individuals were diagnosed with type 2 diabetes. Over a 5-year period, an additional 500 individuals were diagnosed with the disease. Which of the following best describes the prevalence of type 2 diabetes at the end of the study? 

Question 2 of 5

3. In a population of 20,000, the incidence rate of a rare genetic disorder is reported as 2 per 1,000 population per year, while the prevalence of the disorder is reported as 12 per 1,000 population. What does this information suggest about the condition?

Question 3 of 5

4. A screening program for breast cancer in a city with a population of 50,000 women identifies 250 new cases in one year. At the beginning of the year, 1,000 women were already known to have breast cancer. Assuming no deaths from breast cancer occurred, what is the prevalence of breast cancer at the end of the year? 

Question 4 of 5

5. A new infectious disease emerges in a small island population of 2,000 individuals. Over the course of the first year, there are 200 reported cases. If no individuals recover or die from the disease during this period, what is the prevalence at the end of the year?

Question 5 of 5


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