Table 2 Patients demographics and parameter scores for rheumatoid hand deformities in each cluster
Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | Cluster 5 | |
|---|---|---|---|---|---|
Patients’ demographics | |||||
N | 49 | 46 | 12 | 8 | 17 |
age (year) | 64.0 (9.9) | 61.2 (9.3) | 62.5 (8.4) | 51.3 (10.2)$ | 63.8 (7.6)** |
disease duration (year) | 16.2 (8.4) | 17.1 (7.2) | 19.7 (7.6) | 17.4 (6.2) | 25.5 (10.8)*, *** |
Kapandji Index | 34.4 (10.9) | 35.8 (9.3) | 30.5 (7.4) | 25.8 (6.6) | 22.5 (8.9)*, *** |
Deformity parameters | |||||
Swan-neck deformity | 1.6 (0.3) | 1.4 (0.2) | 1.6 (0.6) | 1.9 (0.5) | 12.1 (0.8)% |
Boutonnière deformity | 1.2 (2.0) | 0.2 (0.7) | 5.3 (2.7)# | 1.4 (2.7) | 0.0 (0.0) |
Ulnar drift | 2.9 (2.7) | 3.7 (2.6) | 3.4 (1.1) | 6.6 (1.4)% | 3.6 (1.7) |