Final answer:
1) The incidence rate of diabetes in 1998 is 2.05%.
2) The death rate of diabetes in 1998 is 0.41%.
3) The fatality rate of diabetes in 1998 is 20%.
4) Prevalence rate of diabetes on January 1st, 1998 is 5.13%
5) Period prevalence rate in 1998 is 5.59%
Step-by-step explanation:
1) To calculate the incidence rate of diabetes in 1998, we need to determine the number of new cases of diabetes in that year.
Given that there were 400 new cases diagnosed as diabetes in 1998, and the population at the beginning of 1998 was 19500, the incidence rate can be calculated as follows:
Incidence rate = (Number of new cases / Population at risk) x 100
Incidence rate = (400 / 19500) x 100
Incidence rate = 2.05%
2) To calculate the death rate of diabetes in 1998, we need to determine the number of deaths from diabetes in that year.
Given that 80 patients died from diabetes during this year, the death rate can be calculated as follows:
Death rate = (Number of deaths / Population at risk) x 100
Death rate = (80 / 19500) x 100
Death rate = 0.41%
3) To calculate the fatality rate of diabetes in 1998, we need to determine the number of deaths from diabetes as a proportion of the total number of cases.
Given that there were 400 new cases diagnosed as diabetes in 1998 and 80 patients died from diabetes during this year, the fatality rate can be calculated as follows:
Fatality rate = (Number of deaths / Number of new cases) x 100
Fatality rate = (80 / 400) x 100
Fatality rate = 20%
4) To calculate the prevalence rate of diabetes on January 1st, 1998, we need to determine the number of people with diabetes at the beginning of the year.
Given that there were 1000 patients with diabetes at the beginning of this year, the prevalence rate can be calculated as follows:
Prevalence rate = (Number of people with diabetes / Population at risk) x 100
Prevalence rate = (1000 / 19500) x 100
Prevalence rate = 5.13%
5) To calculate the period prevalence rate in 1998, we need to determine the total number of people with diabetes in that year.
Given that there were 400 new cases diagnosed as diabetes in 1998, 80 patients died from diabetes during this year, and there were 1000 patients with diabetes at the beginning of this year, the period prevalence rate can be calculated as follows:
Period prevalence rate = (Number of people with diabetes at the beginning of the year + Number of new cases - Number of deaths) / Population at risk x 100
Period prevalence rate = (1000 + 400 - 80) / 19500 x 100
Period prevalence rate = 5.59%