Prevalence


Prevalence
The proportion of individuals in a population having a disease. Prevalence is a statistical concept referring to the number of cases of a disease that are present in a particular population at a given time.
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The number of cases of a disease existing in a given population at a specific period of time (period p.) or at a particular moment in time (point p.).

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prev·a·lence 'prev(-ə)-lən(t)s n the percentage of a population that is affected with a particular disease at a given time compare INCIDENCE (2b)

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prev·a·lence (prevґə-ləns) [L. praevalēre to prevail] the number of cases of a disease that are present in a population at a specified time, either at a point in time (point p.) or over a period of time (period p.); when the term is unmodified, the former meaning is usually inferred. See prevalence rate, under rate. Cf. incidence.

Medical dictionary. 2011.

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  • PRÉVALENCE — Terme utilisé dans l’interprétation d’un test de dépistage pratiqué à des fins épidémiologiques. La prévalence est le rapport entre le total des individus «vrais positifs» et des individus «faux négatifs» et le nombre global des personnes testées …   Encyclopédie Universelle

  • Prevalence — Prévalence Évolutions possibles de prévalences au cours du temps. En épidémiologie, la prévalence est une mesure de l état de santé d une population à un instant donné. Pour une affection donnée, elle est calculée en rapportant à la population… …   Wikipédia en Français

  • Prevalence — Prev a*lence, n. [L. praevalentia: cf. F. pr[ e]valence. See {Prevail}.] The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as, the prevalence of virtue …   The Collaborative International Dictionary of English

  • prevalence — UK US /ˈprevələns/ noun [U] ► the fact of something existing or happening often : »They noted the prevalence of this attitude among leading financial experts …   Financial and business terms

  • prevalence — 1590s, fact of having mastery, from Fr. prévalence, from M.L. praevalentia, from praevalere (see PREVALENT (Cf. prevalent)). Meaning condition of being widespread or general is from 1713 …   Etymology dictionary

  • prevalence — index boom (prosperity), custom, frequency, mode, preponderance, usage Burton s Legal Thesaurus. William C. Burton …   Law dictionary

  • Prevalence — In epidemiology, the prevalence of a health related state (typically disease, but also other things like smoking or seatbelt use) in a statistical population is defined as the total number of cases of the risk factor in the population at a given… …   Wikipedia

  • Prévalence — Évolutions possibles de prévalences au cours du temps. En épidémiologie, la prévalence est une mesure de l état de santé d une population à un instant donné. Pour une affection donnée, elle est calculée en rapportant à la population totale, le… …   Wikipédia en Français

  • prevalence — noun a) The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor. b) The… …   Wiktionary

  • prevalence — n. a measure of morbidity based on current sickness in a population, estimated either at a particular time (point prevalence) or over a stated period (period prevalence). It can be expressed either in terms of affected people (persons) or… …   The new mediacal dictionary


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