title: [Example of a bias linked to the misunderstanding of the forms of a variable].
authors.affiliation: Université de Nancy 1, Faculté de médecine, Laboratoire d'informatique.
authors.forename: G
authors.initials: G
authors.lastname: Nisand
authors.forename: B
authors.initials: B
authors.lastname: Junod
authors.forename: A
authors.initials: A
authors.lastname: Patris
authors.forename: A
authors.initials: A
authors.lastname: Guerci
authors.forename: F
authors.initials: F
authors.lastname: Kohler
mesh_terms: D015982:Bias; D006760:Hospitalization; D006801:Humans; D011795:Surveys and Questionnaires
vernacular_title: Exemple d'un biais lié à l'incompréhension des modalités d'une variable.