Table 1.

Demographic data.

Demographic Data	PsO without joint involvement (n = 25)	PsA	AS	RA	P value
	n = 25	n = 25	n = 25	n = 25
Age, mean ± SD	44.40 ± 16.84	43.96 ± 10.03	35.96 ± 9.04	50.04 ± 9.57	.001
Gender, n (%)					.012
- Female	11 (44)	17 (68)	15 (60)	22 (88)
- Male	14 (56)	8 (32)	10 (40)	3 (12)
Weight (kg), mean ± SD	81.4 ± 15.52	80.92 ± 16.23	69.96 ± 20.23	77.32 ± 17.64	.077
Height (m), mean ± SD	1.71 ± 0.07	1.65 ± 0.07	1.67 ± 0.09	1.63 ± 0.07	.02
BMI (kg/m2), mean ± SD	25.78 ± 8.70	29.53 ± 5.57	24.90 ± 6.44	28.97 ± 6.94	.076
Family History of Psoriasis, n (%)	8 (32)	7 (28)	3 (12)	3 (12)	.172
Laboratory Data, n (%)
- Elevated CRP	2 (8.3)	8 (32)	6 (24)	16 (64)	< .001
- HLA B27 Positive	1 (14.3) (n = 7)	1 (5) (n = 20)	11 (44)	1 (5.9) (n = 17)	.007
- RF Positive	0 (n = 4)	1 (5.9) (n = 17)	0 (n = 16)	16 (64)	< .001
- Anti-CCP Positive	0 (n = 4)	0 (n = 13)	0 (n = 7)	13 (56.5) (n = 23)	< .001
PASI, mean ± SD	2.42 ± 2.94/ 1.60 (0.1–11.5)	1.51 ± 1.57/ 1.10 (0–6.5)	-	-	.382
NAPSI, mean ± SD	20.48 ± 13.12/ 19 (2–49)	20.04 ± 15.78/ 18 (2–74)	-	-	.734
Arthritis Type in PsA Patients, n (%)	-		-	-
Polyarticular	-	3 (12)	-	-
Mono-oligoarticular	-	8 (32)	-	-
DIP	-	1 (4)	-	-
Arthritis Mutilans	-	0	-	-
Spondyloarthritis	-	13 (52)	-	-

Numerical data are expressed as mean ± SD or median (range). Categorical data are expressed as frequencies (percentages).

anti-CCP = anti-citrullinated protein, AS = ankylosing spondylitis, BMI = body mass index, CRP = C-reactive protein, DIP = distal interphalangeal predominant, n = number of patients, NAPSI = Nail PsO Severity Index, PASI = PsO Area and Severity Index, PsA = psoriatic arthritis, PsO = psoriasis, RA = rheumatoid arthritis, RF = rheumatoid factor, SD = standard deviation.