1. Prevalence of doctor-diagnosed arthritis and arthritis-attributable activity limitation –- United States, 2007-2009;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2010
2. National and state medical expenditures and lost earnings attributable to arthritis and other rheumatic conditions–United States, 2003;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2007
3. Projections of US prevalence of arthritis and associated activity limitations;Hootman;Arthritis Rheum,2006
4. A national public health agenda for osteoarthritis 2010;Centers for Disease Control and Prevention,2010
5. Effect of physical activity on functional status among older middle-age adults with arthritis;Feinglass;Arthritis Rheum,2005