the quality of prevailing generally; being widespread
"he was surprised by the prevalence of optimism about the future"
(epidemiology) the ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population
a superiority in numbers or amount
"a preponderance of evidence against the defendant"
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.
The total number of cases of a disease in the given statistical population at a given time.
The total number of cases of a disease in the given statistical population at a given time, divided by the number of individuals in the population.
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
Origin: [L. praevalentia: cf. F. prvalence. See Prevail.]
In epidemiology, the prevalence or prevalence proportion is the proportion of a population found to have a condition. It is arrived at by comparing the number of people found to have the condition with the total number of people studied, and is usually expressed as a fraction, as a percentage or as the number of cases per 10,000 or 100,000 people. "Point prevalence" is the proportion of a population that has the condition at a specific point in time. "Period prevalence" is the proportion of a population that has the condition at some time during a given period, and includes people who already have the condition at the start of the study period as well as those who acquire it during that period. "Lifetime prevalence" is the proportion of a population that at some point in their life have experienced the condition. Prevalence estimates are used by epidemiologists, health care providers, government agencies and insurers. Prevalence is contrasted with incidence, which is a measure of new cases arising in a population over a given period.
U.S. National Library of Medicine
The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.
The numerical value of prevalence in Chaldean Numerology is: 7
The numerical value of prevalence in Pythagorean Numerology is: 2
Sample Sentences & Example Usage
This is a crime, and its prevalence suggests we're not doing everything that we can, that we need to do, to root out that crime.
It's a two-fold story of higher prevalence of debt, and an uptick in those with a very high level of debt, some people are in real trouble.
Many of the men consuming the highest amounts of trans fat may also be the ones with the least healthy lifestyles or with the highest prevalence of health problems.
The prevalence of suicide, without doubt, is a test of height in civilization; it means that the population is winding up its nervous and intellectual system to the utmost point of tension and that sometimes it snaps.
The results show that after the use of oral antimicrobials, a shift occurs in the composition of the oral biofilm in a more healthy direction. Several species that can cause caries such as S. Mutans and Lactobacillus, decrease in prevalence, whereas the more harmless species increase in prevalence.
Images & Illustrations of prevalence
Translations for prevalence
From our Multilingual Translation Dictionary
Get even more translations for prevalence »
Find a translation for the prevalence definition in other languages:
Select another language: