title: Causal relationship and confounding in statistical models.
authors.affiliation: BJS Statistical Editors.
authors.forename: J
authors.initials: J
authors.lastname: Ranstam
authors.affiliation: BJS Statistical Editors.
authors.forename: J A
authors.initials: JA
authors.lastname: Cook
mesh_terms: D015982:Bias; D015984:Causality; D015986:Confounding Factors, Epidemiologic; D015233:Models, Statistical; D057216:Propensity Score