Mixed Random and Nonrandom Allocation, and Group Randomization Have Been Mislabeled and Misanalysed, Necessitating Reanalysis. Comment on Conner et al. KiwiC for Vitality: Results of a Randomized Placebo-Controlled Trial Testing the Effects of Kiwifruit or Vitamin C Tablets on Vitality in Adults with Low Vitamin C Levels. Nutrients 2020, 12, 2898

Nutrients (Sep 2022)

Affiliations

Colby J. Vorland: Department of Applied Health Science, Indiana University School of Public Health-Bloomington, Bloomington, IN 47405, USA
Yasaman Jamshidi-Naeini: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Bloomington, IN 47405, USA
Lilian Golzarri-Arroyo: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Bloomington, IN 47405, USA
Andrew W. Brown: Department of Applied Health Science, Indiana University School of Public Health-Bloomington, Bloomington, IN 47405, USA
David B. Allison: Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Bloomington, IN 47405, USA

Abstract

We read the report by Conner and colleagues that tested whether kiwifruit or vitamin C affected measures of vitality [...]