Swollen and tender joint counts for the 4 cohorts within the subsample of patients with inflammatory polyarthritis who were referred by their general practitioner.
| Cohort 1, 1990–1994, n = 533 | Cohort 2, 1995–1999, n = 367 | Cohort 3, 2000–2004, n = 149 | Cohort 4, 2005–2008, n = 87 | p* | |||||
|---|---|---|---|---|---|---|---|---|---|
| Swollen joints, 28, median [IQR] | 533/533 | 4 [1, 10] | 367/367 | 2 [0, 8] | 149/149 | 2 [0, 5] | 87/87 | 2 [0, 4] | < 0.001* |
| Tender joints, 28, median [IQR] | 533/533 | 4 [1, 11] | 367/367 | 4 [1, 9] | 149/149 | 3 [0, 8] | 87/87 | 2 [0, 7] | < 0.001* |
| Swollen and tender, 28, median [IQR] | 533/533 | 2 [0, 6] | 367/367 | 1 [0, 4] | 149/149 | 0 [0, 2] | 87/87 | 0 [0, 2] | < 0.001* |
↵* Statistical significance set at 0.05 level. IQR: interquartile range.