Incidence refers to: a. the number of existing cases of disease at a given time divided...

Incidence refers to:

a. the number of existing cases of disease at a given time divided by the observed population in the same period

b. the number of existing cases of disease

c. new cases of disease in a specified time

d. population at risk of a disease over a specified time period

Expert Solution

Correct Answer: Option C

Explanation:

Incidence is the likelihood of the occurrence of a disease in a population over a specified period of time.
It is the number of new cases of a disease over a specified period of time.
it is the ratio of the new case to the susceptible population over a period of time.
It gives information about the number of people who acquired the disease amongst the susceptible population

Incorrect answer:

Option a - incorrect - Incidence deals with new cases, not pre-existing ones. Prevalence is related to the total cases new and existing over a period of time

Option b - incorrect - the number of existing cases of a disease is related to the prevalence. It gives an idea about the burden of the disease

Option d - Incidence deals with the number of people who develop a disease from the population at risk over a period of time. Not all who are at risk develop the disease.

Nightingale answered 2 years ago

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