title: Understanding confounding in research.
authors.affiliation: Ruth H. Young Center for Children and Families, University of Maryland School of Social Work, Baltimore, MD, USA.
authors.forename: Kantahyanee W
authors.initials: KW
authors.lastname: Murray
authors.forename: Anne
authors.initials: A
authors.lastname: Duggan
mesh_terms: D000397:Air Pollution / Q000009:adverse effects; D001249:Asthma / Q000209:etiology; D035843:Biomedical Research; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D012107:Research Design; D012307:Risk Factors; D014028:Tobacco Smoke Pollution / Q000009:adverse effects
chemical_list: D014028:Tobacco Smoke Pollution