# proportion

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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.

## proportion

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.

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References in periodicals archive ?
It said the Pakistan Bureau of Statistics (PBS) must also publicly release the population numbers of non-Muslims and persons with disabilities, as well as data on internal migration at the district level which might help explain disparities in voter-to-population proportions.
MORE than one in four students graduated from university with a first last year, as the proportion awarded the highest honours soared.
Knowledge of the ideal dimensions and proportions of maxillary anterior teeth is a key component in creating an attractive smile during operative, orthodontic, and prosthodontic procedures.
THE PROPORTION PRINCIPLE: The greater an ingredient's proportion in the formulation, the more its feeder's discharge-rate variability influences the proportions of other ingredients.
Many of the variables are transformed into proportions in order to control for variances in total population across ZIP codes.
The proportion of women with unmet need decreased in every subregion between 2003 and 2012, hut those proportions remained high in many areas, including middle Africa (81%), western Africa (74%), eastern Africa (54%), western Asia (50%) and south Asia (34%).
The proportion of rural residents sympathetic to the demonstrations amounts to 21% compared to 67% who are unsympathetic, whereas in urban areas 17% of residents are sympathetic compared to 77% who are not.
28, 2011 (CENS) -- Responding to governmental policy to rein in the overheated realty market, Taiwan's domestic banks have tightened mortgage lending, resulting in the proportion of home mortgages down to 24.
In the EU, the proportion of the population having completed higher education, ie tertiary level education of at least two years, has increased steadily through the generations.
1 : the size, number, or amount of one thing or group of things as compared to that of another thing or group of things <The proportion of boys to girls in our class is two to one.

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