Health

Higher daily step count linked with lower all-cause mortality

In a new study, higher daily step counts were associated with lower mortality risk from all causes. The research team, which included investigators from the National Cancer Institute (NCI) and the National Institute on Aging ...

Immunology

Newly discovered immune cells contribute to toxic shock

Recently discovered immune cells called MAIT cells play a key role in group A streptococcal toxic shock, researchers at Karolinska Institutet in Sweden report. The results, which are published in the journal PNAS, have potential ...

Health

Tackling inequality could save millions of children

An unprecedented study mapping child deaths over almost two decades finds that nearly half of the 5.4 million under-five deaths in 2017 can be attributed to differences in child death rates within and across countries.

Diseases, Conditions, Syndromes

New single vaccination approach to killer diseases

Scientists from the University of Adelaide's Research Centre for Infectious Diseases have developed a single vaccination approach to simultaneously combat influenza and pneumococcal infections, the world's most deadly respiratory ...

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 ...

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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