Table 4 ACR improvement criteria for use in rheumatoid arthritis
| A patient is classified as improved if there is at least 20% improvement in five out of seven core-set variables, the first two required: |
| Tender joint count |
| Swollen joint count |
| Acute phase reactant |
| Patient rating of pain |
| Patient global assessment of disease activity |
| Observer global assessment of disease activity |
| Physical disability |