Table 4.
The risk factors of active disease in enthesitis-related arthritis (N = 70)
| Active n = 46 |
Inactive n = 13 |
P | Non-activea n = 24 |
P | |
|---|---|---|---|---|---|
| ≤4 joints involved | 44 | 13 | > 0.999 | 24 | 0.543 |
| > 4 joints involved | 2 | 0 | > 0.999 | 0 | 0.543 |
| Anterior uveitis | 7 | 0 | 0.330 | 0 | 0.087 |
| prednisolone used, ever | 27 | 7 | 0.762 | 13 | 0.801 |
| Family history of HLA-B27-related disease | 3 | 2 | 0.303 | 5 | 0.113 |
| HLA-B27-positivity | 42 | 12 | > 0.999 | 23 | 0.654 |
| Clinical or radiographic evidence of sacroiliitis | 12 | 0 | 0.051 | 0 | 0.006 |
| Hip arthritis | 12 | 5 | 0.491 | 8 | 0.583 |
| B*27:04b | 14 | 9 | > 0.999 | – | – |
| B*27:05b | 1 | 1 | > 0.999 | – | – |
aNon-active: Inactive + Remission on/off medication
bonly 25 HLA-B27-positive patients underwent subtype testing