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Dictionary

ONE-SHOT DESIGN

Aidan Kelly

A study design where a single group of individuals (or other interesting unit of analysis) is selected for observation over a single, limited time period, usually because they have experienced some factor taken as important in shaping some outcome. It is akin to one-off cross-sectional design. An example of one such design might be a one-off survey of unemployed people in a specific local area to assess their health status and the impact of unemployment on health. Thus there is no attempt to approximate to the classical experiment. There is no comparison group of employed people, there is no attempt to study changes over time and the sample selected may not ...

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