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2020 · Letter · The journals of gerontology. Series A, Biological sciences and medical sciences

Errors or Irreproducibility in Effect Size Calculations and Incomplete Reporting of Results in "Systematic Review of the Effects of Blueberry on Cognitive Performance as We Age"

Colby J Vorland; Paola P Mattey-Mora; Luis M Mestre; Xiwei Chen; Stephanie L Dickinson; Andrew W Brown; David B Allison

Identifies effect-size calculation and reporting problems that limit reproducibility of a review of blueberries and cognitive performance during aging.

Open-science resources

Resource verification & source notes
  • Free full text (PMC): The complete article body was retrieved from the public NCBI PMC JATS endpoint. This confirms free access; reuse permissions depend on the individual article license.
  • Effect-size calculations: Live public OSF file inventory contains: Effect size calculations - for publication - final.xlsx. Derived effect-size spreadsheet associated by Blueberry LTE project context and the matching letter/preprint; not raw participant data.
  • Earlier preprint: Matched title / source version grouping.

Publication details

Research themes

Reproducibility & robustnessStatistical rigorNutrition & aging

nutrition · aging · brain-health · evidence-synthesis

Author affiliations & identifiers
  • Colby J Vorland: Department of Applied Health Science, Indiana University School of Public Health-Bloomington.
  • Paola P Mattey-Mora: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington.
  • Luis M Mestre: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington.
  • Xiwei Chen: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington.
  • Stephanie L Dickinson: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington.
  • Andrew W Brown: Department of Applied Health Science, Indiana University School of Public Health-Bloomington.
  • David B Allison: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington.

Versions & associated materials

These items belong to this research work. Their individual titles, author lists, and source identifiers are preserved below.

Preprint & version links

Related materials

Metadata sources: PubMed, OpenAlex, CV, Google Scholar. Classification is an editorial interpretation of the title, abstract, and supplied CV.