Gerontology & Geriatrics

Increasing frailty may lead to death

A new study published in Age and Ageing indicates that frail patients in any age group are more likely to die than those who are not frail.

Diseases, Conditions, Syndromes

Improved outcomes seen with liver grafts from older donors

(HealthDay)—From 2003 to 2016, liver graft loss and mortality improved among recipients of liver grafts from older donors, according to a study published online Feb. 13 in JAMA Surgery.


C-sections by trained health officers are a safe alternative

Sierra Leone has one of the highest maternal mortality ratios in the world—for every 100,000 live births, 1360 women will die. In Norway, that number is just 5 women per 100,000 live births; in the US, it's 14, according ...

Gerontology & Geriatrics

Breaking the vicious cycles of age-related diseases

Biologist Aleksey Belikov from the Moscow Institute of Physics and Technology has proposed that rapid progression of age-related diseases may result from the formation of so-called vicious cycles. An example of this is when ...

Diseases, Conditions, Syndromes

Tuberculosis—Inhibiting host cell death with immunotherapy

Tuberculosis treatment still entails the administration of several antibiotics over a period of months and is torturous for many patients. The pathogen's increasing multidrug resistance additionally complicates this lengthy ...

Alzheimer's disease & dementia

Professional classical musicians are not protected from dementia

Listening and practicing music have been reported to have many beneficial effects on human health. The effect of music on human brain has been previously studied in young professionals but studies on the long-term effects ...

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Mortality rate

Mortality rate is a measure of the number of deaths (in general, or due to a specific cause) in some population, scaled to the size of that population, per unit time. Mortality rate is typically expressed in units of deaths per 1000 individuals per year; thus, a mortality rate of 9.5 in a population of 100,000 would mean 950 deaths per year in that entire population. It is distinct from morbidity rate, which refers to the number of individuals in poor health during a given time period (the prevalence rate) or the number who currently have that disease (the incidence rate), scaled to the size of the population.

One distinguishes:

In regard to the success or failure of medical treatment or procedures, one would also distinguish:

Note that the crude death rate as defined above and applied to a whole population can give a misleading impression. 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 1000 people can be higher for developed nations than in less-developed countries, despite life expectancy being higher in developed countries due to standards of health being better. This happens because developed countries typically have a completely different population age distribution, with a much higher proportion of older people, due to both lower recent 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.

This text uses material from Wikipedia, licensed under CC BY-SA