All of the statements about incidence are true, except: a. The denominator includes the population at risk. b. The numerator includes the number of new cases. c. It does not include the unit of time. d. It is a rate.
Health ยท Fri Jul 15 2022
Answered on
The statement that is NOT true about incidence is "c. Does not include unit of time".
Incidence is a term used in epidemiology to measure the occurrence of new cases of a specific disease or condition within a population over a specified period of time. In other words, it represents the rate at which new cases develop in a population.
To calculate the incidence rate, we use the formula: Incidence rate = (Number of new cases of a disease / Population at risk) x (Unit of time).
Let's break down the options to see why the answer is "c. Does not include unit of time":
a. Denominator includes population at risk: This is true. When calculating incidence, we consider the population that is susceptible to the disease or condition being studied.
b. Numerator includes number of new cases: This is also true. The numerator represents the number of new occurrences of the disease or condition within the specified time frame.
c. Does not include unit of time: This statement is not true. As mentioned earlier, incidence includes a unit of time, which is a crucial component in calculating the rate.
d. It is a rate: This is true. Incidence is considered a rate because it expresses the number of new cases in relation to the population and time period.
So, the only option that is NOT true about incidence is "c. Does not include unit of time".