AS | No AS | |||
---|---|---|---|---|
USpA | No USpA | USpA | No USpA | |
PsA | ||||
Aa-IBD | 0 | 4 | 1 | 19 |
No Aa-IBD | 8 | 13 | 52 | 2008 |
No PsA | ||||
Aa-IBD | 0 | 8 | 10 | 89 |
No Aa-IBD | 133 | 823 | 684 | NA |
Aa-IBD, inflammatory arthritis associated with inflammatory bowel disease; AS, ankylosing spondylitis; NA, not applicable; PsA, psoriatric arthritis; USpA, undifferentiated spondylarthritis.