title: Readers guide to critical appraisal of cohort studies: 3. Analytical strategies to reduce confounding.
authors.affiliation: Department of Health Care Policy, Harvard Medical School, Boston, MA, USA.
authors.forename: Sharon-Lise T
authors.initials: SL
authors.lastname: Normand
authors.forename: Kathy
authors.initials: K
authors.lastname: Sykora
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mamdani
authors.forename: Paula A
authors.initials: PA
authors.lastname: Rochon
authors.forename: Geoffrey M
authors.initials: GM
authors.lastname: Anderson
mesh_terms: D015331:Cohort Studies; D015986:Confounding Factors, Epidemiologic; D003627:Data Interpretation, Statistical; D012044:Regression Analysis