The evidence contained in the P-value is context dependent
Language
en
Article de revue
This item was published in
Trends in Ecology & Evolution. 2022-07, vol. 37, n° 7, p. 569-570
Elsevier
English Abstract
In a recent opinion article, Muff et al. recapitulate well-known objections to the Neyman-Pearson Null-Hypothesis Significance Testing (NHST) framework and call for reforming our practices in statistical reporting. We agree ...Read more >
In a recent opinion article, Muff et al. recapitulate well-known objections to the Neyman-Pearson Null-Hypothesis Significance Testing (NHST) framework and call for reforming our practices in statistical reporting. We agree with them on several important points: the significance threshold P<0.05 is only a convention, chosen as a compromise between type I and II error rates; transforming the p-value into a dichotomous statement leads to a loss of information; and p-values should be interpreted together with other statistical indicators, in particular effect sizes and their uncertainty. In our view, a lot of progress in reporting results can already be achieved by keeping these three points in mind. We were surprised and worried, however, by Muff et al.'s suggestion to interpret the p-value as a "gradual notion of evidence". Muff et al. recommend, for example, that a P-value > 0.1 should be reported as "little or no evidence" and a P-value of 0.001 as "strong evidence" in favor of the alternative hypothesis H1.Read less <
Origin
Hal imported