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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in medical statistics, the ratio of the number of deaths from a disease, injury, or circumstance to the number suffering from the disease, injury, or circumstance, expressed in percent and calculated for a given period of time (usually a year).

The following types of lethality are distinguished: hospital lethality, the ratio of the number of persons who die in a hospital from a given disease to the number hospitalized with the disease; extrahospital lethality, the ratio of the number of persons who die from a disease to the number suffering from the disease and treated outside of a hospital; and total lethality, the ratio of the number of persons who die from a disease to the total number affected with the same disease, in and outside of the hospital.

Lethality is one of the criteria of the efficacy of therapeutic agents, methods of treatment, and medical institutions (promptness of medical care, start of therapy, duration and character of hospitalization, availability of surgical treatment, quality of care).

Lethality should not be confused with mortality, which refers to the rate of death in a population.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
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Since 1996, the JNLWP has had five defined missions: identifying and understanding current and projected operational requirements and capability gaps; identifying and developing technologies into operationally suitable and effective less lethal solutions that are cost-effective; facilitating the acquisition and fielding of less lethal capabilities; advancing awareness of policy and public understanding through strategic communication and support for education and training; and efficiently managing resources and support.
The name of the compounding pharmacy supplying lethal injection drugs for Texas executions must be released because it is public information, a judge ruled late Thursday.
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Summary: President Barack Obama's top foreign policy adviser Susan Rice Friday said Washington was providing "lethal and non-lethal" support to select members of the Syrian opposition, offering more detail than usual on U.S.
-- The disarray surrounding lethal injection in the U.S.