For total medical expenditures, mean per-person expenditures for rheumatoid arthritis averaged $17,010 for the years 2008 to 2011. Aggregate medical expenditures for the estimated 1.04 million people with rheumatoid arthritis in the United States averaged $17.8 billion in each of the years 2008 to 2011.     

For incremental medical expenditures, mean per person expenditures for rheumatoid arthritis averaged $6,428 for the years 2008 to 2011. Aggregate medical expenditures for the United States for rheumatoid averaged $6.7 billion in each of the years 2008 to 2011. (Reference Table 10.13 PDF CSV)