The top five countries for the highest and lowest prevalence of RA in recent global estimate between 1980 and 2019.
| Global prevalence of RA | Top five countries | Prevalence (%) |
|---|---|---|
| Highest | 1-Cuba | 2.70 |
| 2-Finland | 1.90 | |
| 3-Lesotho | 1.80 | |
| 4-USA | 1.07 | |
| 5-Lebanon | 1.00 | |
| Lowest | 1-Nigeria | 0.00 |
| 2-Taiwan | 0.05 | |
| Taiwan | 0.10 | |
| Taiwan | 0.12 | |
| 3-Thailand | 0.12 | |
| 4-India | 0.15 | |
| 5-Philippines | 0.17 |