Neglect of publication bias compromises meta-analyses of educational research.

Because negative findings have less chance of getting published, available studies tend to be a biased sample. This leads to an inflation of effect size estimates to an unknown degree. To see how meta-analyses in education account for publication bias, we surveyed all meta-analyses published in the...

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Autores principales:	Ivan Ropovik, Matus Adamkovic, David Greger
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dd44a95b262245719d9e5570992d1e61
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spelling	oai:doaj.org-article:dd44a95b262245719d9e5570992d1e612021-12-02T20:03:57ZNeglect of publication bias compromises meta-analyses of educational research.1932-620310.1371/journal.pone.0252415https://doaj.org/article/dd44a95b262245719d9e5570992d1e612021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0252415https://doaj.org/toc/1932-6203Because negative findings have less chance of getting published, available studies tend to be a biased sample. This leads to an inflation of effect size estimates to an unknown degree. To see how meta-analyses in education account for publication bias, we surveyed all meta-analyses published in the last five years in the Review of Educational Research and Educational Research Review. The results show that meta-analyses usually neglect publication bias adjustment. In the minority of meta-analyses adjusting for bias, mostly non-principled adjustment methods were used, and only rarely were the conclusions based on corrected estimates, rendering the adjustment inconsequential. It is argued that appropriate state-of-the-art adjustment (e.g., selection models) should be attempted by default, yet one needs to take into account the uncertainty inherent in any meta-analytic inference under bias. We conclude by providing practical recommendations on dealing with publication bias.Ivan RopovikMatus AdamkovicDavid GregerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0252415 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ivan Ropovik Matus Adamkovic David Greger Neglect of publication bias compromises meta-analyses of educational research.
description	Because negative findings have less chance of getting published, available studies tend to be a biased sample. This leads to an inflation of effect size estimates to an unknown degree. To see how meta-analyses in education account for publication bias, we surveyed all meta-analyses published in the last five years in the Review of Educational Research and Educational Research Review. The results show that meta-analyses usually neglect publication bias adjustment. In the minority of meta-analyses adjusting for bias, mostly non-principled adjustment methods were used, and only rarely were the conclusions based on corrected estimates, rendering the adjustment inconsequential. It is argued that appropriate state-of-the-art adjustment (e.g., selection models) should be attempted by default, yet one needs to take into account the uncertainty inherent in any meta-analytic inference under bias. We conclude by providing practical recommendations on dealing with publication bias.
format	article
author	Ivan Ropovik Matus Adamkovic David Greger
author_facet	Ivan Ropovik Matus Adamkovic David Greger
author_sort	Ivan Ropovik
title	Neglect of publication bias compromises meta-analyses of educational research.
title_short	Neglect of publication bias compromises meta-analyses of educational research.
title_full	Neglect of publication bias compromises meta-analyses of educational research.
title_fullStr	Neglect of publication bias compromises meta-analyses of educational research.
title_full_unstemmed	Neglect of publication bias compromises meta-analyses of educational research.
title_sort	neglect of publication bias compromises meta-analyses of educational research.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/dd44a95b262245719d9e5570992d1e61
work_keys_str_mv	AT ivanropovik neglectofpublicationbiascompromisesmetaanalysesofeducationalresearch AT matusadamkovic neglectofpublicationbiascompromisesmetaanalysesofeducationalresearch AT davidgreger neglectofpublicationbiascompromisesmetaanalysesofeducationalresearch
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Neglect of publication bias compromises meta-analyses of educational research.

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