Arthritis Research & Therapy

Table 2 Pearson correlations between Pro-C2 levels in axial spondyloarthritis and psoriatic arthritis and clinical parameters

From: Chondrocyte activity is increased in psoriatic arthritis and axial spondyloarthritis

	axSpA				PsA
	Total (n = 110)	Treatment-naïve (n = 34)	Currently treated, total (n = 63)	Previously treated (n = 13)	Total (n = 101)	Treatment-naïve (n = 13)	Currently treated, total (n = 76)	Previously treated (n = 12)
Age	ns	ns	ns	ns	ns	r = −0.55	ns	ns
Age	ns	ns	ns	ns	ns	p = −0.051	ns	ns
BMI	ns	ns	ns	ns	ns	r = 0.60	ns	ns
BMI	ns	ns	ns	ns	ns	p = 0.032	ns	ns
Disease duration	ns	ns	ns	r = 0.54	ns	r = 0.55	ns	ns
Disease duration	ns	ns	ns	p = 0.030	ns	p = 0.052	ns	ns
ASDAS	ns	r = 0.45	ns	ns	ns	ns	ns	ns
ASDAS	ns	p = 0.008	ns	ns	ns	ns	ns	ns
HAQ	ns	ns	r = 0.47	ns	r = −0.34	ns	r = −0.35	ns
HAQ	ns	ns	p = 0.010	ns	p = 0.004	ns	p = 0.008	ns
Sex	ns	ns	ns	ns	ns	ns	ns	ns
BASDAI	ns	ns	ns	ns	ns	ns	ns	ns
BASFI	ns	ns	r = −0.30	ns	ns	ns	ns	ns
BASFI	ns	ns	p = 0.008	ns	ns	ns	ns	ns
SJC68	ns	ns	ns	ns	ns	ns	ns	r = −0.92
SJC68	ns	ns	ns	ns	ns	ns	ns	p = 0.0001
TJC68	ns	ns	ns	ns	ns	ns	ns	r = −0.89
TJC68	ns	ns	ns	ns	ns	ns	ns	p = 0.0003

Abbreviations: ASDAS Ankylosing Spondylitis Disease Activity Score, axSpA axial spondyloarthritis, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, BMI body mass index, HAQ Health Assessment Questionnaire, ns not significant, SJC68 68 swollen joint count, TJC68 68 tender joint count

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ISSN: 1478-6362

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