Posted on August 10th, 2016 by publiclife
Administrative data is the term used to describe everyday data about individuals collected by government departments and agencies. Examples include exam results, benefit receipt and National Insurance payments.
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Posted on September 24th, 2020 by Jennie Blows
Age effects relates to changes in an outcome as a result of getting older.
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Posted on September 24th, 2020 by Jennie Blows
Anonymisation refers to the removal of study participants’ identifying information (e.g., name, address) in order to preserve their privacy.
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Posted on July 24th, 2016 by ninjasforhire
Attrition is the discontinued participation of study participants in a longitudinal study. Attrition can reflect a range of factors, from the study participant not being traceable to them choosing not to take part when contacted. Attrition is problematic both because it can lead to bias in the study findings (if the attrition is higher among some groups than others) and because it reduces the size of the sample.
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Posted on September 24th, 2020 by Jennie Blows
Baseline refers to the start of a study when initial information is collected on participation (however, in longitudinal studies, researchers may adopt an alternative ‘baseline’ for the purposes of analysis).
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Posted on September 24th, 2020 by Jennie Blows
Biological samples is the term used for specimens collected from human subjects from which biological information, such as genetic markers, can be extracted for analysis. Common examples include blood, saliva or hair.
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Posted on December 4th, 2018 by Ryan Bradshaw
Body mass index is a measure used to assess if an individual is a healthy weight for their height. It is calculated by dividing the individual’s weight by the square of their height, and it is typically represented in units of kg/m2.
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Posted on September 24th, 2020 by Jennie Blows
Boosted samples are used to overcome sample bias due to attrition or to supplement the representation of smaller sub-groups within the sample. Inclusion of boosted samples must be accompanied by appropriate survey weights.
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Posted on September 24th, 2020 by Jennie Blows
Computer-assisted personal interviewing (CAPI) is a technique for collecting data from participants using computers to eliminate common errors such as questionnaire routing and data entry mistakes. The use of computers take place within the context of a face-to-face interview.
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Posted on September 24th, 2020 by Jennie Blows
Computer-assisted self-interviewing (CASI) is a technique for collecting data from participants using computers to eliminate common errors such as questionnaire routing and data entry mistakes. The use of computers take place within the context of a self-completion questionnaire.
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