Spondyloarthropathies in Autoimmune Diseases and Vice Versa

Table 5

ADs in patients with SpAs.

	Classical classification [2]				New classification [3, 4]
	All (𝑛=144)^a	AS (𝑛=80)	PsA (𝑛=31)	uSpA (𝑛=24)	Axial (𝑛=89)	Peripheral (𝑛=55)	𝑃value
SS	2 (1.39)	1 (1.3)	1 (3.22)	0	1 (1.12)	1 (1.81)	NS
RA	0*	0	0	0*	0	0*	NA
SLE	0	0	0	0	0	0	NA
AT	5 (3.47)	3 (3.75)	1 (3.22)	1 (4.16)	3 (3.37)	2 (3.63)	NS
Total	7 (4.86)	4 (5)	2 (6.45)	1 (4.16)	4 (4.5)	3 (5.45)	NS

AS: ankylosing spondylitis, PsA: psoriatic arthritis, uSpA: undifferentiated spondyloarthropatty, SS: Sjögren’s syndrome, RA: rheumatoid arthritis, SLE: systemic lupus erythematosus, AT: autoimmune thyroiditis, AD: autoimmune disease, SpAs: spondyloarthropathies, NA: not applicable, and NS: nonsignificant.
^aNeither ReA (𝑛=3) nor exclusive extraarticular SpA were included.
*One patient presented with monoarthritis, HLA-B27, anti-CCP, and rheumatoid factor.