# Humanitarian Charter and Minimum Standards in Humanitarian Response

## Formulas for calculating key health indicators

Crude mortality rate (CMR)

• Definition: The rate of death in the entire population, including both women and men, and all ages.

• Formula:
 Total number of deaths during time period x10,000 persons = Deaths/ 10,000 persons/day Mid-period population at risk x Number of days in time period

Under-5 mortality rate (U5MR)

• Definition: The rate of death among children below 5 years of age in the population.

• Formula:
 Total number of deaths in children <5 years during time period x10,000 persons = Deaths/ 10,000 children under 5 years/ day Total number of children <5 years x Number of days in time period

Incidence rate

• Definition: The number of new cases of a disease that occur during a specified period of time in a population at risk of developing the disease.

• Formula:
 Number of new cases due to specific disease in time period x1,000 persons = New cases due to specific disease/ 1,000 persons/month Population at risk of developing disease x Number of months in time period

Case fatality rate (CFR)

• Definition: The number of people who die of a disease divided by the number of people who have the disease.

• Formula:
 Number of people dying from disease during time period x 100 = x% People who have the disease during time period

Health facility utilisation rate

• Definition: The number of outpatient visits per person per year. Whenever possible, a distinction should be drawn between new and old visits, and new visits should be used to calculate this rate. However, it is often difficult to differentiate between new and old visits, so they are frequently combined as total visits during a disaster.

• Formula:
 Total number of visits in one week x 52 weeks = Visits/ person/ year Total population

Number of consultations per clinician per day

• Definition: Average number of total consultations (new and repeat cases) seen by each clinician per day.

• Formula:
 Total number of consultations in one week ÷ Number of days health facility open per week Number FTE* clinicians in health facility

* FTE (full-time equivalent) refers to the equivalent number of clinicians working in a health facility. For example, if there are six clinicians working in the outpatient department but two of them work half-time, then the number of FTE clinicians = 4 full-time staff + 2 half-time staff = 5 FTE clinicians.