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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
mathematics
Estimating the sample mean and standard deviation from commonly reported quantiles in meta-analysis
Statistical Methods in Medical Research, Volume 29, No. 9, Year 2020
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Description
Researchers increasingly use meta-analysis to synthesize the results of several studies in order to estimate a common effect. When the outcome variable is continuous, standard meta-analytic approaches assume that the primary studies report the sample mean and standard deviation of the outcome. However, when the outcome is skewed, authors sometimes summarize the data by reporting the sample median and one or both of (i) the minimum and maximum values and (ii) the first and third quartiles, but do not report the mean or standard deviation. To include these studies in meta-analysis, several methods have been developed to estimate the sample mean and standard deviation from the reported summary data. A major limitation of these widely used methods is that they assume that the outcome distribution is normal, which is unlikely to be tenable for studies reporting medians. We propose two novel approaches to estimate the sample mean and standard deviation when data are suspected to be non-normal. Our simulation results and empirical assessments show that the proposed methods often perform better than the existing methods when applied to non-normal data. © The Author(s) 2020.
Authors & Co-Authors
Steele, Russell J.
Canada, Montreal
Université Mcgill
Thombs, Brett D.
Canada, Montreal
Sir Mortimer B. Davis Jewish General Hospital
Canada, Montreal
Université Mcgill
Benedetti, Andrea L.
Canada, Montreal
Centre Universitaire de Santé Mcgill
Canada, Montreal
Université Mcgill
Levis, Brooke
Unknown Affiliation
Riehm, Kira E.
Unknown Affiliation
Saadat, Nazanin
Unknown Affiliation
Levis, Alexander W.
Unknown Affiliation
Azar, Marleine
Unknown Affiliation
Rice, Danielle B.
Unknown Affiliation
Sun, Ying
Unknown Affiliation
Krishnan, Ankur
Unknown Affiliation
He, Chen
Unknown Affiliation
Wu, Yin
Unknown Affiliation
Bhandari, Parash Mani
Unknown Affiliation
Neupane, Dipika
Unknown Affiliation
Imran, Mahrukh
Unknown Affiliation
Boruff, Jill T.
Unknown Affiliation
Cuijpers, Pim C.
Unknown Affiliation
Gilbody, Simon M.
Unknown Affiliation
Ioannidis, John P.A.
Unknown Affiliation
Kloda, Lorie Andrea
Unknown Affiliation
McMillan, Dean
Unknown Affiliation
Patten, Scott B.
Unknown Affiliation
Shrier, Ian
Unknown Affiliation
Ziegelstein, Roy Charles
Unknown Affiliation
Akena, Dickens Howard
Unknown Affiliation
Arroll, Bruce
Unknown Affiliation
Ayalon, Liat
Unknown Affiliation
Baradaran, Hamid Reza
Unknown Affiliation
Baron, Murray
Unknown Affiliation
Beraldi, Anna
Unknown Affiliation
Bombardier, Charles H.
Unknown Affiliation
Butterworth, Peter
Unknown Affiliation
Carter, Gregory Leigh
Unknown Affiliation
Chagas, Marcos Hortes Nisihara
Unknown Affiliation
Chan, Juliana C.N.
Unknown Affiliation
Cholera, Rushina
Unknown Affiliation
Chowdhary, Neerja
Unknown Affiliation
Clover, Kerrie Ann
Unknown Affiliation
Conwell, Yeates C.
Unknown Affiliation
de Man-van Ginkel, Janneke M.
Unknown Affiliation
Delgadillo, Jaime
Unknown Affiliation
Fann, Jesse R.
Unknown Affiliation
Fischer, Felix H.
Unknown Affiliation
Fung, Daniel S.
Unknown Affiliation
Gelaye, Bizu S.
Unknown Affiliation
Goodyear-Smith, Felicity A.
Unknown Affiliation
Greeno, Catherine G.
Unknown Affiliation
Hall, Brian James
Unknown Affiliation
Harrison, Patricia Ann
Unknown Affiliation
Härter, Martin Christian Christian
Unknown Affiliation
Hegerl, Ulrich
Unknown Affiliation
Hides, Leanne M.
Unknown Affiliation
Hobfoll, Stevan E.
Unknown Affiliation
Hudson, Marie Anne R.
Unknown Affiliation
Hyphantis, Thomas N.
Unknown Affiliation
Inagaki, Masatoshi
Unknown Affiliation
Ismail, Khalida A.
Unknown Affiliation
Jetté, Nathalie J.
Unknown Affiliation
Khamseh, Mohammad Ebrahim
Unknown Affiliation
Kiely, Kim Matthew
Unknown Affiliation
Kwan, Yunxin
Unknown Affiliation
Lamers, Femke
Unknown Affiliation
Liu, Shening
Unknown Affiliation
Lotrakul, Manote
Unknown Affiliation
Loureiro, Sônia Regina
Unknown Affiliation
Löwe, Bernd
Unknown Affiliation
Marsh, Laura C.
Unknown Affiliation
McGuire, Anthony William
Unknown Affiliation
Mohd-Sidik, Sherina
Unknown Affiliation
Munhoz, Tiago Neuenfeld
Unknown Affiliation
Muramatsu, Kumiko
Unknown Affiliation
Osório, Flávia L.
Unknown Affiliation
Patel, Vikram Harshad
Unknown Affiliation
Pence, Brian Wells
Unknown Affiliation
Persoons, Philippe
Unknown Affiliation
Picardi, Angelo
Unknown Affiliation
Reuter, Katrin
Unknown Affiliation
Rooney, Alasdair Grant
Unknown Affiliation
Santos, Iná Silva Dos
Unknown Affiliation
Shaaban, Juwita
Unknown Affiliation
Sidebottom, Abbey C.
Unknown Affiliation
Simning, Adam
Unknown Affiliation
Stafford, Lesley
Unknown Affiliation
Sung, Sharon Cohan
Unknown Affiliation
Turner, Alyna
Unknown Affiliation
van der Feltz-Cornelis, Christina M.
Unknown Affiliation
van Weert, Henk C.P.M.
Unknown Affiliation
Vöhringer, Paul A.
Unknown Affiliation
White, Jennifer Helen
Unknown Affiliation
Whooley, Mary A.
Unknown Affiliation
Winkley, Kirsty
Unknown Affiliation
Yamada, Mitsuhiko
Unknown Affiliation
Zhang, Yuying
Unknown Affiliation
Statistics
Citations: 316
Authors: 94
Affiliations: 3
Identifiers
Doi:
10.1177/0962280219889080
ISSN:
09622802
Study Approach
Systematic review