title: Using propensity scores to reduce case-control selection bias.
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Walsh
authors.forename: Amy
authors.initials: A
authors.lastname: Trentham-Dietz
authors.forename: Polly A
authors.initials: PA
authors.lastname: Newcomb
authors.forename: Ronald
authors.initials: R
authors.lastname: Gangnon
authors.forename: Mari
authors.initials: M
authors.lastname: Palta
mesh_terms: D000063:Accidents, Traffic / Q000706:statistics & numerical data*; D040421:Cell Phone; D006801:Humans