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• n  the quality of prevailing generally; being widespread
  he was surprised by the prevalence of optimism about the future
• n  (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
• n  a superiority in numbers or amount

• As an editorial accompanying the JAMA paper concludes: "without substantial declines in prevalence, the public health toll of childhood obesity will continue to mount.
• Because of its high-altitude exposure to the sun, Tibet has unusually high rates of eye disease, and because of the prevalence of Buddhist beliefs, blindness is often regarded as .
• Parents and school officials discussed the prevalence of violent music and video games; a similar concern arose over school sociology -- bullies, outsiders and teen goth culture.

• preponderance

News & Articles

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• High prevalence of NSAID prescription in those at risk of heart attack/death in primary care
  ( European League Against Rheumatism ) New study data presented today at EULAR 2013, the Annual Congress of the European League Against Rheumatism, demonstrate a high prevalence of NSAID prescriptions in patients at risk of ischaemic heart disease.
  June 14, 2013 - EurekAlert!
• Study finds chemical TMT may raise kidney stone risk
  The prevalence of nephrolithiasis, or kidney stones, in the U.S. doubled between 1994 and 2010, and is rising among men, women and in children as young as 5.
  June 13, 2013 - UB Reporter
• Very high prevalence of chronic health conditions among adult survivors of childhood cancer
  In an analysis that included more than 1,700 adult survivors of childhood cancer, researchers found a very high percentage of survivors with 1 or more chronic health conditions, with an estimated cumulative prevalence of any chronic health condition of 95 percent at age 45 years, according to a new study.
  June 12, 2013 - Science Daily

Quotes

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• David Ludwig in Baltimore Sun
  Without a substantial decline in prevalence, the full impact of the childhood epidemic will continue to mount in coming years,Ludwig said.
• Galarrwuy Yunupingu in The Canberra Times
  Mr Yunupingu said that since the death he had asked health services to develop a plan to deal with the "increasing prevalence of self-harm among young people in Arnhem Land".