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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 ?
1298(a)(3) provides in part that stock owned, directly or indirectly, by, or for, a partnership will be considered as being owned proportionately by its partners.
Those greens are hand picked and the residue is proportionately smaller, meaning that any debris is likely to remain in the field.
Proportionately more spending on making customer information actionable.
Other research shows that while Generation Y consumers say they prefer online ordering to phone ordering, those consumers place proportionately nearly the same number of phone orders as older consumers.
In a typical transaction, an electricity seller increases its level of power production, raising the "pressure" and causing electricity to flow into the network, while the buyer decreases its power production proportionately, lowering its "pressure" and thereby drawing a roughly equivalent amount out of the system.
RTC and private investors will share all proceeds proportionately until each recovers an amount equal to its initial investment.
The exception required the stock to be dispersed proportionately among unsecured creditors and to be unavailable when limited-interest preferred stock was transferred to creditors.
UPA members have sold proportionately more 200 Mbps chips over the last nine months than other vendors of Powerline chips that deliver Ethernet-like speeds have reportedly sold over the last six years.
Delivery Period: Delivery To Commence One Month From The Date Of Issue Of Purchase Order And Supply To Be Made Proportionately To Complete The Supply With Infourmonths From The Date Of Issue Of P.
It is noted that a proportionately higher percentage of females pray five times a day during both Ramazan and the rest of the months.
For instance, he wonders whether, if two rods were placed on a finger as researchers somehow induced the illusion that the finger was expanding, the perceived distance between the rods would expand proportionately.
All significant parties in Colorado this fall opposed a measure that would have split that state's electoral votes roughly proportionately with the popular vote, rather than awarding them all to one candidate, no matter how slender his vote margin.