Which of the following statements accurately describe incidence as a measure of disease? Group of answer choices It includes all known cases of disease at a point in time, regardless of when the disease was diagnosed. It includes only new cases of disease over a period of time. This measure can be expressed as a fraction, a decimal, or a percentage. It is useful only for describing disease frequency among the population of interest and is not an appropriate measure for comparing disease frequency in different locations.

Incidence is a way of estimating the amount of new cases of a disease (it could be in terms of health results) that occurs in a population at risk during a particular time range.

It comprises of two measures:

1. Risk (or cumulative incidence: it is the number of individuals who are diagnosed with the disease over a stated time range. It is represented as a percentage or as per 1000 individuals for a small population.

2. Incidence Rate: used to evaluate the frequency of new occurrences of disease in a population. It considers the total time that each person stayed under observation and is at risk of showing the signs and symptoms under investigation.