The prevalence of rheumatoid arthritis in UK
| Age | Males (%) | UK estimate | Females (%) | UK estimate |
| 16–44 | 0.02 | 2500 | 0.12 | 15 100 |
| 45–64 | 0.58 | 42 900 | 1.67 | 126 900 |
| 65–74 | 1.14 | 27 100 | 2.56 | 67 800 |
| 75+ | 2.18 | 39 100 | 2.99 | 85 700 |
| Total adult population | 0.44 | 106 500 | 1.16 | 297 600 |