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Cross-sectional study
| Glossary of Statistical Terms |
- A cross-sectional study compares different individuals to each other at the same time—it looks at a cross-section of a population. the differences between those individuals can confound with the effect being explored. for example, in trying to determine the effect of age on sexual promiscuity, a cross-sectional study would be likely to confound the effect of age with the effect of the mores the subjects were taught as children: the older individuals were probably raised with a very different attitude towards promiscuity than the younger subjects. thus it would be imprudent to attribute differences in promiscuity to the aging process. c.f. longitudinal study.
- A type of observational study in which measurements are made on cases, both affected and unaffected, at one point in time and the measurements analyzed to uncover associations with the disease state
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Перекрестное исследование, русский
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Study, английский
- The act of examining something to learn about it she’s making a study of diseases of small children. they have finished their study of the effects of the drug on pregnant women. verb to examine something to learn about it he’s studying pharmacy. doctors are studying the results of the screening programme.
- Исследование; изучение
- Изучение, исследование || исследовать
- Исследование. эксперимент или серия экспериментов, проводимых для получения информации о конкретном объекте.
Study aids, английский
The education subcategory containing apps to help you study for exams.
Study aims, английский
Study base, английский
Study coordinator, английский
Study coordinator (sc), английский
Координатор клинических исследований. синонимы: clinical research coordinator (crc), clinical trial coordinator (ctc).
Study design, английский
План исследования; структура исследования включает выбор предметов исследования, их разделение на подгруппы, методы исследования, порядок измерений и т.д.
Study flow chart, английский
График, план, схема исследования. синонимы: flow chart, time schedule.
Study for electrical and instrumentation systems, английский
Study group, английский
- Научно-исследователь- ская группа
- A student collaboration group where studying can be organized and managed online.
Study hall, английский
Комната в школе для самостоятельных занятий, приготовления уроков и т. п. часы, отведенные для самостоятельной работы учащихся (в расписании учебного заведения)
Study initiation, английский
Инициация исследования. синоним: initiation (of a study).
Study initiation visit (siv), английский
Инициирующий визит. синонимы: site initiation visit (siv), start-up visit.
Study materials, английский
Материалы (для) клинического исследования. синонимы: clinical trial materials (ctm), study supplies.
Study monitor, английский
Монитор исследования. синоним: monitor.
Study number, английский
Номер исследования. каждому клиническому исследованию присваивается специальный номер, который позволяет его идентифицировать. этот номер должен присутствовать на всех основных документах (протокол, индивидуальная регистрационная карта, препараты для исследования, формы информированного согласия, листы информации для пациентов, финансовые соглашения, разрешения комитета по этике и уполномоченных органов и т.д.).
Study nurse, английский
Медицинская сестра клинического исследования. синоним: research nurse.
Study of critical environmental problems, английский
Программа по изучению критических проблем окружающей среды
Study pi, английский
A small version of a project which is carried out first, in order to discover how well it works and to solve any problems, before going ahead with the full version
Study population, английский
Исследуемая группа населения
Study regulation, английский
Инструкция по проведению изучения
Population, английский
- A definable set of individual units to which the findings from statistical examination of a sample subset are intended to be applied. the population will generally much outnumber the sample. in re-randomisation statistics the process of applying inference
- See stock.
- A collection of units being studied. units can be people, places, objects, epochs, drugs, procedures, or many other things. much of statistics is concerned with estimating numerical properties (parameters) of an entire population from a random sample of units from the population.
- A group or number of people living within a specified area or sharing similar characteristics (such as occupation or age).
- Население; народонаселение; генеральная совокупность (в выборочном наблюдении); популяция (биол)
- Население
- 1. the number of people living in a country or town population statistics show that the birth rate is slowing down. the government has decided to screen the whole population of the area. 2. the number of patients in hospital the hospital population in the area has fallen below 10,000.
- Популяция
- Население; популяция -
- Популяция. в клинических исследованиях совокупность субъектов, обладающих какими-либо одинаковыми признаками (пол, возраст, диагноз).
- Население; популяция
- Any group of individuals, usually of a single species, occupying a given area at the same time; groups of organisms with homologue (same) alleles. p. cycle: changes in the numbers of individuals in a population which repeatedly oscillate between periods of high and low density. p. density: allowing a mathematically precise reflection - pd. • absolute: pd = number of individuals/unit area or volume [1/m2] or [1/m3] • relative: pd allows only a simple comparison (pd <, =, >, ? etc.). p. dynamics: the variations in time and space in the sizes and densities of populations; distribution due to changing food resources - the stability of a population depends upon abiotic factors, intraspecific competition (density dependent), natality, mortality etc. p. ecology: the study of the variations in time and space in the sizes and densities of populations, and of the factors causing those variations. p. fluctuation: variations over time in the size of a population. p. growth: is zero, when the birth rate equals the death rate (see carrying capacity). nt+1 = nt + r nt, current number of individuals r = (natality + immigration) - (mortality+emigration) r, intrinsic rate of growth (see density) p. pyramid: a means of illustrating the age structure of a population diagrammatically, by placing the youngest age class at the base and stacking successive age classes above it. p. regulation : a tendency in a population for some factor to cause density to increase when it is low and to decrease nt, momentary number of individuals when it is high. n0, number of individuals at start
- Generally, a collection of individuals with common characteristics. in statistics, a potentially infinite collection of independent (->independence) units that include all units of a specified type with attention paid only to the agggregate (->aggregation) property of the collection. a sample of data drawn from this population is a subset of the units constituting this population and scientific generalizations from such samples are limited by the size of the population originally specified (->model, ->representation).
- The process of scanning content to compile and maintain an index.
- Fish of the same species inhabiting a specified geographic area.
Differences, английский
Цифровой избирательный вызов, цив - технология радиосвязи, при которой предварительное согласование канала вызова другого судна осуществляется не широковещательно на голосовом канале, а на отдельном цифровом канале. после согласования рабочего канал
Longitudinal, английский
- Generally parallel to the direction of the wood fibres.
- Продольный
- Generally, parallel to the direction of the wood fibers.
- Продольный, относящийся к долготе, стрингер
- [1] extending in the lengthwise direction, as distinguished from transverse. [2] said of any fore-and-aft structural member, such as a frame or bulkhead.
- Running lengthwise.
- Along the length of a structure.
- Direction parallel to the long axis of an object and perpendicular to its radius — for example, down the length of a cylinder. compare circumferential; radial; transverse. lot tolerance percent defective (ltpd): the poorest quality, in percent defective, individual lot that is acceptable in a sampling plan. ltpd is the percent defective that will be accepted by the sampling plan at most 10 percent of the time. with such a plan, the producer agrees to supply just enough nonconforming product such the consumer will accept the lot using the agreed to sampling plan and acceptable quality level. compare acceptable quality level. lumen (lm): si photometric unit of luminous flux, weighted according to the photopic vision response. one lumen equals the light emitted by one candela (cd) point source into one steradian (sr) solid angle (1 lm = 1 cd/sr).
Observational, английский
N наблюдатель- ный adequacy
Unaffected, английский
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Skewed distribution, английский
- A distribution that is not symmetrical.
- Probability distribution in which an unequal number of observations lie below (negative skew) or above (positive skew) the mean.
Controlled, randomized experiment, английский
A controlled experiment in which the assignment of subjects to the treatment group or control group is done at random, for example, by tossing a coin.
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