biostudies-literatureUnknown60(8)Horgan GRural and Environment Science and Analytical Services DivisionThis article discusses the variability and randomness of p values, the most widely used currency of evidence in nutritional and health studies. One implication of this, the importance of always testing interaction terms when subgroups are examined and presented separately is also discussed.European journal of nutrition4203-4206https://www.ebi.ac.uk/biostudies/studies/S-EPMC8572204biostudies-literaturep value variability and subgroup testing.PMC8572204Horgan Gfalsep value variability and subgroup testing.This article discusses the variability and randomness of p values, the most widely used currency of evidence in nutritional and health studies. One implication of this, the importance of always testing interaction terms when subgroups are examined and presented separately is also discussed.2021-01-01T00:00:00Z2021 Dec2024-02-15T03:50:35.483Z2022-02-11T12:47:12.304ZS-EPMC85722043358595110.1007/s00394-021-02498-z