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) |
Numbers express the mean (standard deviation). Analysis of variance with post-hoc Bonferroni was performed for multiple comparison
*: p < 0.05; cluster 1 and 5, **: p < 0.05; cluster 4 and 5, ***: p < 0.05; cluster 2 and 5, $: p < 0.05, cluster 1 and 4
%: p < 0.05, against all the other clusters, #: p < 0.05, against cluster 1, 2, and 4