Table 1.

Clinical characteristics of the early PsA cohort^*

	Early PsA (n = 49)
Age, mean ± SD years	42.8 ± 12.5
Women	23 (46.9)
RF positive	1 (2)
Anti-CCP positive	2 (4)
Symptom duration, median (IQR) months	10 (4–13)
Arthritis at presentation	49 (100)
Enthesitis at presentation	37 (75.5)
Inflammatory back disease at presentation	13 (26.5)
Current skin psoriasis	44 (89.8)
PASI score, median (IQR)	2.6 (1.2–4.7)
Nail psoriasis	30 (61.2)
mNAPSI score, median (IQR)	1 (0–9)
Tender joint count (total 68), median (IQR)	7 (4–15)
Swollen joint count (total 66), median (IQR)	4 (3–9)

^*Values are the number (percentage) unless indicated otherwise. PsA = psoriatic arthritis; RF = rheumatoid factor; anti-CCP = anti–cyclic citrullinated peptide antibody; IQR = interquartile range; PASI = Psoriasis Area and Severity Index; mNAPSI = modified Nail Psoriasis Severity Index.