title: [When is a difference statistically significant?].
abstract: From a very simple example (8 deaths observed in one group verus 2 in the other), we explain in details how to determine whether a difference is statistically significant. The arbitrariness of the 5% limit used to conclude that a difference is significant, is discussed. The difference between a one-sided and a two-sided situation is described in an appendix.
authors.affiliation: Institut Gustave-Roussy, Villejuif.
authors.forename: C
authors.initials: C
authors.lastname: Hill
mesh_terms: D006801:Humans; D011336:Probability; D013223:Statistics as Topic
vernacular_title: Quand dit-on qu'une différence est statistiquement significative?