The effects of imputing the missing standard deviations on the standard error of meta analysis estimates

A common problem in the meta analysis of continuous data is that some studies do not report sufficient information to calculate the standard deviation (SDs) of the treatment effect. One of the approaches in handling this problem is through imputation. This article examines the empirical implications...

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Main Authors:	Nik Idris, Nik Ruzni, Robertson, Chris
Format:	Article
Language:	English
Published:	Taylor & Francis 2009
Subjects:	HA Statistics Q Science (General)
Online Access:	http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/1/PUBLISHED_ARTICLE.pdf

id	iium-5530
recordtype	eprints
spelling	iium-55302011-11-22T00:46:50Z http://irep.iium.edu.my/5530/ The effects of imputing the missing standard deviations on the standard error of meta analysis estimates Nik Idris, Nik Ruzni Robertson, Chris HA Statistics Q Science (General) A common problem in the meta analysis of continuous data is that some studies do not report sufficient information to calculate the standard deviation (SDs) of the treatment effect. One of the approaches in handling this problem is through imputation. This article examines the empirical implications of imputing the missing SDs on the standard error (SE) of the overall meta analysis estimate. The simulation results show that if the SDs are missing under Missing Completely at Random and Missing at Random mechanism, imputation is recommended. With non random missing, imputation can lead to overestimation of the SE of the estimate. Taylor & Francis 2009-03-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/5530/1/PUBLISHED_ARTICLE.pdf Nik Idris, Nik Ruzni and Robertson, Chris (2009) The effects of imputing the missing standard deviations on the standard error of meta analysis estimates. Communications in Statistics - Simulation and Computation, 38 (3). pp. 513-526. ISSN 0361-0918 (P), 1532-4141 (O) http://www.tandfonline.com/doi/pdf/10.1080/03610910802556106 10.1080/03610910802556106
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	HA Statistics Q Science (General)
spellingShingle	HA Statistics Q Science (General) Nik Idris, Nik Ruzni Robertson, Chris The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
description	A common problem in the meta analysis of continuous data is that some studies do not report sufficient information to calculate the standard deviation (SDs) of the treatment effect. One of the approaches in handling this problem is through imputation. This article examines the empirical implications of imputing the missing SDs on the standard error (SE) of the overall meta analysis estimate. The simulation results show that if the SDs are missing under Missing Completely at Random and Missing at Random mechanism, imputation is recommended. With non random missing, imputation can lead to overestimation of the SE of the estimate.
format	Article
author	Nik Idris, Nik Ruzni Robertson, Chris
author_facet	Nik Idris, Nik Ruzni Robertson, Chris
author_sort	Nik Idris, Nik Ruzni
title	The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
title_short	The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
title_full	The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
title_fullStr	The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
title_full_unstemmed	The effects of imputing the missing standard deviations on the standard error of meta analysis estimates
title_sort	effects of imputing the missing standard deviations on the standard error of meta analysis estimates
publisher	Taylor & Francis
publishDate	2009
url	http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/ http://irep.iium.edu.my/5530/1/PUBLISHED_ARTICLE.pdf
first_indexed	2023-09-18T20:14:10Z
last_indexed	2023-09-18T20:14:10Z
_version_	1777407676339191808

The effects of imputing the missing standard deviations on the standard error of meta analysis estimates

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