Evaluating the effectiveness, efficiency, cost and value of contacting study authors in a systematic review: a case study and worked example

Abstract Background Studies find that identifying additional study data is possible by contacting study authors or experts. What is less certain is the time taken, costs involved and value found by using this supplementary search method. The purpose of this study is to determine the effectiveness, e...

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Bibliographic Details
Main Authors: Chris Cooper, Juan Talens Bou, Jo Varley-Campbell
Format: Article
Language:English
Published: BMC 2019-03-01
Series:BMC Medical Research Methodology
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12874-019-0685-0