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(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.
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.


percentage or fraction of a whole. Often expressed also as a rate or ratio by comparison to a total or other population.

proportion differences
estimating the significance of differences between two proportional morbidities or mortalities.

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 ?
2 million on a proportionate consolidation basis), compared with $2.
As China Mobile, with 633 million proportionate subscriptions at end-1Q15, and China Unicom, with 299 million, only operate in China, Vodafone and Bharti Airtel are the largest and second largest international mobile operating groups in the world, respectively, because they both operate in multiple markets.
Under Pennsylvania's Fair Share Act, defendants determined to be less than 60% at fault are liable solely for damages proportionate to their percentage of fault, and not for any portion of harm done by any other entity.
Certainly policies on welfare, national security, the war in Iraq, Social Security or taxes, taken singly or in combination, do not provide a proportionate reason to vote for a pro-abortion candidate.
The sticking point is this--and this is the hard part," Burke was quoted as saying: "What is a proportionate reason to justify favoring the taking of an innocent, defenseless human life?
Similarly, for partnerships taxed under foreign law at the entity level, the safe harbor rule allows a partner to take into account the share of the partnership's foreign tax expenditures proportionate to the partner's share of the income to which those taxes relate when computing U.
The statute requires public entities be charged for their proportionate share of the capital component, at a nondiscriminatory rate; not more than their share,'' Cartwright said.
Does "deny equal benefit" mean that other churches would receive a proportionate share of public funds?
Most commercial leases contain a tax escalation clause which provides that the tenant will pay as additional rent his proportionate share of any increase in real estate taxes on the entire building.
Identifiable assets - if a subsidiary is less than wholly owned, should 100 percent of the fair values of its identifiable net assets at the acquisition date be recognized in consolidation, or only the parent's proportionate share of fair values?
All or a portion of certain classes of offered exchangeable REMIC certificates may be exchanged for a proportionate interest in the related exchangeable certificates.
57 per share on a proportionate consolidation basis), compared with $7.