title: Regarding "A positive or a negative confounding variable? A simple teaching aid for clinicians and students".
authors.forename: Hsin-Yi
authors.initials: HY
authors.lastname: Weng
mesh_terms: D015982:Bias; D015986:Confounding Factors, Epidemiologic; D004813:Epidemiology / Q000193:education*; D015233:Models, Statistical; D010820:Physicians; D013337:Students, Medical; D013663:Teaching; D014481:United States