Cumulative Incidence Calculator

Cumulative Incidence Calculator calculator can be used to estimate the cumulative incidence of an event in a population over a specific time period.

Input Parameters

Calculation Results

Cumulative Incidence

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Calculation Formula

Cumulative Incidence (CI) = (Number of Individuals Who Experienced the Event / Total Population at Risk) × 100%

Where:
CI = Cumulative Incidence
Number of Individuals Who Experienced the Event = Number of cases during follow-up
Total Population at Risk = Population at the start of follow-up

Cumulative Incidence Calculator Usage Guide

Learn how to use the Cumulative Incidence Calculator and its working principles

How to Use the Calculator

  1. Enter the Total Population at Risk - this is the number of individuals in the population who were at risk of experiencing the event at the start of the study.
  2. Enter the Number of Individuals Who Experienced the Event - this is the number of individuals who experienced the event during the follow-up period.
  3. Enter the Follow-up Period in years - this is the duration of time over which the study was conducted.
  4. Click the Calculate button to compute the cumulative incidence.
  5. The result will be displayed as a percentage.

Understanding Cumulative Incidence

Cumulative Incidence (CI) is a measure of the risk of developing a disease or event over a specified period of time. It is expressed as a proportion (usually as a percentage) and represents the fraction of a population that develops the event during a given period.

The formula used is:

Cumulative Incidence (CI) = (Number of Individuals Who Experienced the Event / Total Population at Risk) × 100%

This calculator is particularly useful in epidemiology and medical research to estimate disease rates in populations over time.