Definition of mortality
1 Meaning of mortalityIf we take the concept of 'death' as a feature of existence, we must define it as necessarily opposed to life. Mortality is the condition of being mortal, therefore be susceptible to death. However, the term mortality is in the majority of cases related to statistical studies applied to populations. Mortality appears as a number that seeks to establish the number of deaths on a particular population.
Mortality commonly taken by statistical studies is establishing the number of deaths per thousand inhabitants within a more or less fixed population. Usually, this percentage is the result of the studies performed or observed over a year. According to the parameters that are made for the death rate of a population, a high mortality rate to one that is more than 30% of that population, while median mortality will be which is located between 15 and 30% of the total number of the population would be considered. Finally, a low mortality rate is always lower than 15%.
Throughout the planet, mortality rates are highly variable and while we find regions with extremely low mortality rates, we can also observe populations which have mortality rates near 30%. Developed and first world countries are obviously those who have better life per capita and therefore have mortality rates lowest in the globe. At the same time, the largest percentages of mortality around the world focused much of African countries.
In this sense, it can also be considered as one of the most important elements of statistical and demographic studies at the rate of infant mortality. This rate produces a percentage of children under a year dead every thousand live births. Without a doubt, infant mortality study allows us to know about a region basic and elementary living conditions since a number of high infant mortality will be speaking to us the lack of elements such as hygiene, sanitation, nutrition and health care for that range of inhabitants.
2. Definition of mortalityMortality to the last necessary stage of the life cycle, where those who have an existence which starts with birth, ends it with death is called. The quality of mortals is contrary to immortality or eternal existence, religious attributed only to God.
Mortality is a measurable value, and can be made in relation to any be alive, for example, fish mortality, of animals in danger of extinction, pets etc, which is carried out in a given period of time, in general annual., to find a mortality rate.
The mortality rate is an indicator used to show if the deaths were many or few, in order to carry out statistics. Mortality is a variable, which, together with birth and migration, determine the demographic dynamics, i.e., changes in the number of the population of a place in a period considered.
Among humans are considered the deaths that occur in a year in place, per thousand inhabitants. This is called crude death rate, which may be higher in countries more advanced, as to live longer inhabitants, thanks to favourable living conditions, they are aging societies, whose population dies much old age. The level of mortality is more effectively expressed in life expectancy at birth, showing the remains of life a person in a society and a time specific.
The infant mortality rate, indicates how many are children under the age of one year being killed in within a year for every thousand children who were born alive.
In the 19th century the mortality rate in the world has been reduced, especially in those countries with a high degree of development, thanks to antibiotics and other medicines, vaccination plans, health campaigns, the possibility of access to drinking water and sanitary conditions, health care and improvement in food. The lack of education, work, hygiene, contribute greatly to increase mortality.
3 Concept of mortalityThe term mortality refers in part to the quality of mortal; i.e. what has died or is subject to death, the opposite to life.
Mortality at the population level, is the relationship between the number of deaths over a period of time, usually one (1) year, and the total population of one geographic entity either.
The phenomenon of mortality is expressed through the rate or rate of mortality, which can be defined as the number of deaths per thousand people in relation to the total population over a set period of time. It is usually expressed as percent or as much per thousand.
The level of life and culture of a population affects considerably the mortality rate; Since the subsistence of the members of a population likely to rely heavily on their standard of living.
For thousands of years, the mortality was very high throughout the world, therefore, the population growth was very slow. From the Industrial Revolution; However, the progressive decline in the birth rate in the currently developed countries, begins descent that became widespread in the developing countries in the mid-20th century, when they substantially improve the levels of medical-sanitary assistance.
The decline in the mortality rate a country or specific region is due to that factor of improvement, as well as the expansion of the services of environmental sanitation, elimination of endemic diseases, and elevated levels of quality of life.
Today the mortality rates are high in countries less resources (more diseases, weak health structure, low hygiene, poor nutrition), and are minimal in developed countries (greater technological possibilities and higher social welfare).