title: Employment-based retirement plan participation: geographic differences and trends.
authors.affiliation: Employee Benefit Research Institute, Washington, DC 20037-1896, USA.
authors.forename: Craig
authors.initials: C
authors.lastname: Copeland
mesh_terms: D000328:Adult; D004651:Employment; D005260:Female; D005544:Forecasting; D005843:Geography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010415:Pensions / Q000145:classification / Q000706:statistics & numerical data*; D012456:Salaries and Fringe Benefits / Q000706:statistics & numerical data; D014481:United States