MORTALITY RATE, or DEATH RATE, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population , scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total. It is distinct from "morbidity ", which is either the prevalence or incidence of a disease, and also from the incidence rate (the number of newly appearing cases of the disease per unit of time).
* 1 Related measures of mortality
* 1.1 Survival rates
* 2 Statistics * 3 Use in health care * 4 See also * 5 References * 6 Sources * 7 External links
RELATED MEASURES OF MORTALITY
Other specific measures of mortality include:
* Crude death rate – the total number of deaths per year per 1,000 people. As of 2016 the crude death rate for the whole world is 7.8 per 1,000 (down from 8.37 per 1,000 in 2009) according to the current CIA World Factbook.
The birth rate is 18.5 per 1,000 per year. The net population growth is 1.06 percent. Note that the crude death rate can be misleading. The crude death rate depends on the age (and gender) specific mortality rates and the age (and gender) distribution of the population. The number of deaths per 1,000 people can be higher in developed nations than in less-developed countries, despite a higher life expectancy in developed countries due to better standards of health. This happens because developed countries typically have a much higher proportion of older people, due to both lower birth rates and lower mortality rates. A more complete picture of mortality is given by a life table , which shows the mortality rate separately for each age. A life table is necessary to give a good estimate of life expectancy .
Other measures of mortality used to provide indications of the relative success or failure of medical treatment or procedures (for life-threatening illnesses, etc.) include:
* Early mortality rate – the total number of deaths in the early stages of an ongoing treatment, or in the period immediately following an acute treatment. * Late mortality rate – the total number of deaths in the late stages of an ongoing treatment, or a significant length of time after an acute treatment.
Mortality may also be expressed in terms of survival . Thus, the
survival rate is equivalent to "1 minus the cumulative death rate"
(with "death from all causes", for example, being expressed in terms
of overall survival). Censored survival curves that incorporate
missing data by using the
World historical and predicted crude death rates (1950–2050) UN, medium variant, 2012 rev. YEARS CDR YEARS CDR
1950–1955 19.1 2000–2005 8.4
1955–1960 17.3 2005–2010 8.1
1960–1965 16.2 2010–2015 8.1
1965–1970 12.9 2015–2020 8.1
1970–1975 11.6 2020–2025 8.1
1975–1980 10.6 2025–2030 8.3
1980–1985 10.0 2030–2035 8.6
1985–1990 9.4 2035–2040 9.0
1990–1995 9.1 2040–2045 9.4
1995–2000 8.8 2045–2050 9.7
The ten countries with the highest crude death rate, according to the
CIA World Factbook
See list of countries by death rate for worldwide statistics.
According to the
World Health Organization
Ischaemic heart disease
Causes of death vary greatly between developed and less developed countries . See list of causes of death by rate for worldwide statistics. Scatter plot of the natural logarithm of the crude death rate against the natural log of per capita real GDP. The slope of the trend line is the elasticity of the crude death rate with respect to per capita real income. It indicates that a 10% increase in per capita real income is associated with a 1.5% decrease in the crude death rate. Source: World Development Indicators.
Of the roughly 150,000 people who die each day across the globe, about two thirds—100,000 per day—die of age-related causes. In industrialized nations, the proportion is much higher, reaching 90%.
USE IN HEALTH CARE
Early recording of mortality rate in European cities proved highly
useful in controlling the plague and other major epidemics . Public
health in industrialised countries was transformed when mortality rate
as a function of age, sex and socioeconomic status emerged in the late
19th and 20th centuries. This track record has led to the argument
that inexpensive recording of vital statistics in developing countries
may become the most effective means to improve global health .
Gathering official mortality statistics can be very difficult in
developing countries, where many individuals lack the ability or
knowledge to report incidences of death to National Vital Statistics
Registries. This can lead to distortion in mortality statistics and a
wrongful assessment of overall health. Studies conducted in
northeastern Brazil, where underreporting of infant mortality is of
huge concern, have shown that alternative methods of data collection,
including the use of "popular
Compensation law of mortality
* ^ Porta, M, ed. (2014). "
* Crude death rate (per 1,000 population) based on World Population
Prospects The 2008 Revision,
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