biostudies-literatureUnknown53(2)Kadlec DEdith Cowan University<h4>Background and objective</h4>Meta-analysis and meta-regression are often highly cited and may influence practice. Unfortunately, statistical errors in meta-analyses are widespread and can lead to flawed conclusions. The purpose of this article was to review common statistical errors in meta-analyses and to document their frequency in highly cited meta-analyses from strength and conditioning research.<h4>Methods</h4>We identified five errors in one highly cited meta-regression from strength and conditioning research: implausible outliers; overestimated effect sizes that arise from confusing standard deviation with standard error; failure to account for correlated observations; failure to account for within-study variance; and a focus on within-group rather than between-group results. WeSports medicine (Auckland, N.Z.)313-325https://www.ebi.ac.uk/biostudies/studies/S-EPMC9877053biostudies-literatureWith Great Power Comes Great Responsibility: Common Errors in Meta-Analyses and Meta-Regressions in Strength & Conditioning Research.PMC9877053Nimphius SSainani KLKadlec DfalseWith Great Power Comes Great Responsibility: Common Errors in Meta-Analyses and Meta-Regressions in Strength & Conditioning Research.<h4>Background and objective</h4>Meta-analysis and meta-regression are often highly cited and may influence practice. Unfortunately, statistical errors in meta-analyses are widespread and can lead to flawed conclusions. The purpose of this article was to review common statistical errors in meta-analyses and to document their frequency in highly cited meta-analyses from strength and conditioning research.<h4>Methods</h4>We identified five errors in one highly cited meta-regression from strength and conditioning research: implausible outliers; overestimated effect sizes that arise from confusing standard deviation with standard error; failure to account for correlated observations; failure to account for within-study variance; and a focus on within-group rather than between-group results. We2023-01-01T00:00:00Z2023 Feb2025-04-26T01:37:44.231Z2025-04-06T10:12:24.924ZS-EPMC98770533620841210.1007/s40279-022-01766-0