The prevention and handling of the missing data

Even in a well-designed and controlled study, missing data occurs in almost all research. Missing data can reduce the statistical power of a study and can produce biased estimates, leading to invalid conclusions. This manuscript reviews the problems and types of missing data, along with the techniqu...

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Main Author:	Hyun Kang
Format:	Article
Language:	English
Published:	Korean Society of Anesthesiologists 2013-05-01
Series:	Korean Journal of Anesthesiology
Subjects:	expectation-maximization imputation missing data sensitivity analysis
Online Access:	http://ekja.org/upload/pdf/kjae-64-402.pdf

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spelling	doaj-cd70c1d5089341d4848181cdfc8ecdec2020-11-25T03:33:56ZengKorean Society of AnesthesiologistsKorean Journal of Anesthesiology2005-64192005-75632013-05-0164540240610.4097/kjae.2013.64.5.4027569The prevention and handling of the missing dataHyun Kang0Department of Anesthesiology and Pain Medicine, Chung-Ang Universtiy College of Medicine, Seoul, Korea.Even in a well-designed and controlled study, missing data occurs in almost all research. Missing data can reduce the statistical power of a study and can produce biased estimates, leading to invalid conclusions. This manuscript reviews the problems and types of missing data, along with the techniques for handling missing data. The mechanisms by which missing data occurs are illustrated, and the methods for handling the missing data are discussed. The paper concludes with recommendations for the handling of missing data.http://ekja.org/upload/pdf/kjae-64-402.pdfexpectation-maximizationimputationmissing datasensitivity analysis
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hyun Kang
spellingShingle	Hyun Kang The prevention and handling of the missing data Korean Journal of Anesthesiology expectation-maximization imputation missing data sensitivity analysis
author_facet	Hyun Kang
author_sort	Hyun Kang
title	The prevention and handling of the missing data
title_short	The prevention and handling of the missing data
title_full	The prevention and handling of the missing data
title_fullStr	The prevention and handling of the missing data
title_full_unstemmed	The prevention and handling of the missing data
title_sort	prevention and handling of the missing data
publisher	Korean Society of Anesthesiologists
series	Korean Journal of Anesthesiology
issn	2005-6419 2005-7563
publishDate	2013-05-01
description	Even in a well-designed and controlled study, missing data occurs in almost all research. Missing data can reduce the statistical power of a study and can produce biased estimates, leading to invalid conclusions. This manuscript reviews the problems and types of missing data, along with the techniques for handling missing data. The mechanisms by which missing data occurs are illustrated, and the methods for handling the missing data are discussed. The paper concludes with recommendations for the handling of missing data.
topic	expectation-maximization imputation missing data sensitivity analysis
url	http://ekja.org/upload/pdf/kjae-64-402.pdf
work_keys_str_mv	AT hyunkang thepreventionandhandlingofthemissingdata AT hyunkang preventionandhandlingofthemissingdata
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The prevention and handling of the missing data

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