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Tag Archives: prospective study design

Types of Study Design: The Reference Period

On the basis of the reference period, the study designs can be categorized into retrospective, prospective and retrospective-prospective study designs Retrospective The aim behind retrospective study design is to study some event, phenomenon or situation that has been happened previously. There are only two ways to collect data for a retrospective study: either the investigator collects information from written evidence like from books, magazines, …

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The Prospective Study Design in Research

The prospective study design studies the impact of a phenomenon, situation, program, attitude or problem in the future. Most of the studies that are conducted using the prospective study design are also classified as experimental studies since the aim of the investigator is to wait for the impact of a program or a situation to see the results on the …

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