Study, longitudinal
A study done over the passage of time. For example, a longitudinal study of children with Down syndrome (trisomy 21) might involve the study of 100 children with this condition from birth to 10 years of age. Also called a diachronic study. The opposite of a cross-sectional (synchronic) study.

Medical dictionary. 2011.

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  • Изучение Определенного Контингента Лиц (Cohort Study, Longitudinal Study, Prospective Study) — систематическое обследование некоторой группы людей в течение определенного периода времени для выявления каких либо особых факторов (например, развития заболевания или наступления смерти) или для изучения характера течения какой либо болезни… …   Медицинские термины

  • Longitudinal study — A longitudinal study is a correlational research study that involves repeated observations of the same items over long periods of time often many decades. It is a type of observational study. Longitudinal studies are often used in psychology to… …   Wikipedia

  • Study on Global Ageing and Adult Health — The Study on Global Ageing and Adult Health (SAGE) is run by the World Health Organization s Multi Country Studies unit in the Information, Evidence and Research Cluster. SAGE is part of the unit s Longitudinal Study Programme which is attempting …   Wikipedia

  • Longitudinal — The word come from the Latin longitudo meaning length. Hence, longitudinal means along the length, running lengthwise, or (by extension) over the course of time. * * * 1. Running lengthwise; in the direction of the long axis of the body or any of …   Medical dictionary

  • study — {{Roman}}I.{{/Roman}} noun 1 learning ADJECTIVE ▪ full time, part time ▪ graduate, postgraduate ▪ independent, private ▪ T …   Collocations dictionary

  • Longitudinal study — A study done over the passage of time. For example, a longitudinal study of children with Down syndrome (trisomy 21) might involve the study of 100 children with this condition from birth to 10 years of age. Also called a diachronic study. The… …   Medical dictionary

  • longitudinal — lon|gi|tu|di|nal [ˌlɔndʒıˈtju:dınəl US ˌla:ndʒıˈtu: ] adj technical 1.) relating to the development of something over a period of time longitudinal study/survey/research etc ▪ a longitudinal study of unemployed workers 2.) going from top to… …   Dictionary of contemporary English

  • Longitudinal — Das Wort longitudinal (von lat. longus „lang“) steht für: die Ausbreitungseigenschaft einer Welle derart, dass die Schwingung in Ausbreitungsrichtung erfolgt, siehe Longitudinalwelle die geographische Länge, welche auch als Longitude bezeichnet… …   Deutsch Wikipedia

  • Longitudinal — The term, longitudinal means along the major (or long) axis as opposed to latitudinal which means along the width , transverse, or across. *In automotive engineering, a longitudinal engine is an engine in which the crankshaft is oriented along… …   Wikipedia

  • Study design — A study design is an analytic approach to conduct an epidemiological investigation, such as a clinical trial. Types of designSome of the most popular designs are sorted below, with the ones at the top being the most powerful at reducing observer… …   Wikipedia

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