CDC - Arthritis - Basics - Definition - Rheumatoid Arthritis
Top of Page V. Prevalence The prevalence of RA is believed to range from 0.5-1.0% in the general population (2). In 2005, an estimated 1.5 million US adults aged ≥ 18 (0.6%) had RA (27), a decrease from the previous 1990 estimate of 2.1 million (28). Prev...