Enter the total number of new cases and the total number of people in the population at risk to determine the cumulative incidence.
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Cumulative Incidence Formula
The following formula is used to calculate the cumulative incidence.
CI = NC / TP
- Where CI is the cumulative incidence
- NC is the number of new cases of a disease
- Tp is the total population at risk
Cumulative Incidence Definition
A cumulative incidence is a ratio of the number of new cases of a disease to the total population that could be exposed to the disease.
Cumulative Incidence Example
How to calculate cumulative incidence?
- First, determine the number of new cases.
Measure the total number of new cases of the disease.
- Next, determine the total population.
Calculate the total population at risk.
- Finally, calculate the cumulative incidence.
Calculate the cumulative incidence using the equation above.
A cumulative incidence rate is the ratio of the number of new cases of a disease to the total population at risk over a given time period.