If the incidence rate of a disease is 3 cases per 1000 people per year, how many

If the incidence rate of a disease is 3 cases per 1000 people per year, how many new cases would you expect in a population of 50,000? (2022)

If the incidence rate of a disease is 3 cases per 1000 people per year, how many new cases would you expect in a population of 50,000? (2022)

Step 1: Understand the incidence rate. It tells us that there are 3 new cases of the disease for every 1000 people in a year.
Step 2: Identify the total population we are looking at, which is 50,000 people.
Step 3: Use the formula to find the expected new cases: Expected new cases = (Incidence rate × Population) / 1000.
Step 4: Plug in the numbers: Expected new cases = (3 × 50000) / 1000.
Step 5: Calculate the multiplication: 3 × 50000 = 150000.
Step 6: Now divide by 1000: 150000 / 1000 = 150.
Step 7: Conclude that we expect 150 new cases in a population of 50,000.

Incidence Rate – The incidence rate measures the frequency of new cases of a disease in a specified population over a defined period.
Population Size – Understanding the total number of individuals in a population is crucial for calculating expected new cases based on incidence rates.
Proportional Calculation – The calculation involves proportional reasoning, where the incidence rate is applied to the population size to estimate new cases.