The measure represents the total number of deaths occurring in a population during a specific time period, typically one year, per 1,000 people. It is calculated by dividing the total number of deaths in a year by the total population, and then multiplying the result by 1,000. For instance, if a country with a population of 1 million experiences 10,000 deaths in a year, the value would be 10 per 1,000.
This metric provides a general overview of mortality levels within a society. It can be useful for comparing mortality across different regions or time periods, although it does not account for age or sex distribution within the population. Historically, it has served as a key indicator of overall health and living conditions, reflecting factors such as access to healthcare, sanitation, and nutrition. Understanding its trends allows for assessing public health interventions and tracking demographic changes.