crude rate

crude rate
the total number of events (e.g. cases of lung cancer) expressed as a rate per 1000 population. When factors such as age structure or sex of populations can significantly affect the rates (as in mortality or morbidity rates) it is more meaningful to compare age/sex specific rates using one or more age groups of a designated sex (e.g. lung cancer in males aged 55–64 years). More complex calculations, which take account of the age and sex structure of a population as a whole, can produce standardized rates or – as has been used for deciding resource allocation in the National Health Service – standardized mortality ratios (SMR). In these, age-specific rates and population structures from a study population and a standard population (e.g. England and Wales) are used to produce a weighted average.

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  • crude rate — the total number of events (e.g. cases of lung cancer) expressed as a percentage (or rate per 1000, etc.) of the whole population. When factors such as age structure or sex of populations may seriously affect their rates (as in mortality or… …   Medical dictionary

  • crude´ness — crude «krood», adjective, crud|er, crud|est, noun. –adj. 1. in a natural or raw state; unrefined: »Oil, ore, and sugar are crude before being refined and prepared for use. SYNONYM(S) …   Useful english dictionary

  • crude´ly — crude «krood», adjective, crud|er, crud|est, noun. –adj. 1. in a natural or raw state; unrefined: »Oil, ore, and sugar are crude before being refined and prepared for use. SYNONYM(S) …   Useful english dictionary

  • Коэффициент Общий (Crude Rate) — общее число случаев (например, заболевания раком легких), выраженное в процентах (или в пересчете на 1000 человек и т.д.) по отношению к населению в целом. Когда такие факторы, как возраст или пол населения, могут сильно повлиять на эти… …   Медицинские термины

  • Rate of natural increase — In demographics, the rate of natural increase (RNI) is the crude birth rate minus the crude death rate of a population. If we neglect the migration, then a positive RNI number means that the population increases and a negative number means that… …   Wikipedia

  • rate — 1. A record of the measurement of an event or process in terms of its relation to some fixed standard; measurement is expressed as the ratio of one quantity to another ( e.g., velocity, distance per unit …   Medical dictionary

  • crude — I. adjective (cruder; crudest) Etymology: Middle English, from Latin crudus raw, crude, undigested more at raw Date: 14th century 1. existing in a natural state and unaltered by cooking or processing < crude oil > 2. archaic unripe, immature …   New Collegiate Dictionary

  • Rate, birth — The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the… …   Medical dictionary

  • Rate, death — The number of deaths in the population divided by the average population (or the population at midyear) is the crude death rate. In 1994, for example, the crude death rate per 1,000 population was 8.8 in the United States, 7.1 in Australia, etc.… …   Medical dictionary

  • rate of return — Calculated as the (value now minus value at time of purchase) divided by value at time of purchase. For equities ( equity), we often include dividends with the value now. See also: return, annual rate of return. Bloomberg Financial Dictionary * * …   Financial and business terms

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