title: Re: "Methods of covariate selection: directed acyclic graphs and the change-in-estimate procedure".
authors.forename: Lei
authors.initials: L
authors.lastname: Nie
mesh_terms: D015982:Bias; D003196:Computer Graphics; D003198:Computer Simulation; D006801:Humans; D015233:Models, Statistical; D015999:Multivariate Analysis; D012044:Regression Analysis; D015983:Selection Bias; D013223:Statistics as Topic