Atotal population of 4,185 people are being observed in a five-year study measuring incidence of prostate cancer.

• 38 prostate cancer cases were confirmed at the end of year 1. •

17 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 2. •

52 additional cases were confirmed at the end of year 3. •

19 additional cases were confirmed and 10 men had withdrawn from the study at the end of year 4. •

30 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 5.

what is the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years?

The incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years is 7.469

Step-by-step explanation:

Consider the provided information.

It is given that 38 prostate cancer cases were confirmed at the end of year 1 and the total population was 4,185.

As we need to find the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years, thus 4185/1000 = 4.185

Thus, the incident rate is: Number of new case/ population of study in 1000.

17 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 2. That means total population is 4185-5=4180

Thus, the incident rate is:

52 additional cases were confirmed at the end of year 3.

Thus, the incident rate is:

19 additional cases were confirmed and 10 men had withdrawn from the study at the end of year 4.

Thus, the incident rate is:

30 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 5.

Thus, the incident rate is:

The average expressed in terms of 1000 person-years

Hence, the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years is 7.469