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prevalence

Epidemiology
(1) The number of people with a specific condition or attribute at a specified time divided by the total number of people in the population.
(2) The number or proportion of cases, events or conditions in a given population.
 
Statistics
A term defined in the context of a 4-cell diagnostic matrix (2 X 2 table) as the amount of people with a disease, X, relative to a population.

Veterinary medicine
(1) A clinical estimate of the probability that an animal has a given disease, based on current knowledge (e.g., by history of physical exam) before diagnostic testing.
(2) As defined in a population, the probability at a specific point in time that an animal randomly selected from a group will have a particular condition, which is equivalent to the proportion of individuals in the group that have the disease. Group prevalence is calculated by dividing the number of individuals in a group that have a disease by the total number of individuals in the group at risk of the disease. Prevalence is a good measure of the amount of a chronic, low-mortality disease in a population, but is not of the amount of short duration or high-fatality disease. Prevalence is often established by cross-sectional surveys.

Patient discussion about proportion

Q. I have found that my body weight has high proportion of water in total weight.. I have found that my body weight has high proportion of water in total weight, and it makes me to take less water and there by increasing my thirst, which in turn stresses my body a lot, what can I do to reduce this problem…..?

A. Your body has a way of compensating when it is lacking something. When you are dehydrated, your body will retain fluids, hence the excess water.
drink plenty of water daily and you will find that you will lose this puffiness as your body adjusts to getting what it needs.

More discussions about proportion
References in periodicals archive ?
- FFO adjusted leverage above 6.5x for a sustained period, based on proportionate consolidation
IFRS 11, and consequently CPC 19 (R2), brought significant changes in conceptual and practical terms, but one of the most controversial was the elimination of the proportionate consolidation as a valid alternative for the recognition of investments in joint ventures.
Investigations have revealed that Mittal and GSHL are holding 30.35 percent of the shareholding of Balasore Alloys Ltd through various Indian as well as foreign promoter and investment companies, and thus have proportionate share of 30.35 percent in the fixed assets of Balasore Alloys Ltd.
These documentation requirements should also be proportionate to your company's size and complexity.
Likewise, he said during the first quarter of the current fiscal year, the CDNS collected Rs 82 bln against the proportionate target of Rs 66 bln.
Two cases seem to imply that when a lot cannot be subdivided, the court should simply allocate to the recipient of the protected homestead that portion that represents the proportionate amount of the protected homestead (proportionate methodology).
LAWYERS have warned Britain's blanket ban on prisoners voting faces a renewed legal challenge after a European court ruling that any such sanctions must be "proportionate".
The operators were measured in terms of proportionate subscriptions.
MP Erkin Sakebayev (SDPK) suggested proportionate division of number of candidates for the Council for Selection of Judges.
It's not a bloodthirsty call for revenge but a plea for proportionate response - one eye NOT two.
We will also help OSHAD to raise awareness of the benefits of sensible and proportionate management of health and safety risks among Abu Dhabi's employers.
The scheme provides the necessary and proportionate liquidity in the wake of external, non-bank related events, said the EC.