Table 2.

Spearman’s correlations between fecal calprotectin and parameters reflecting disease activity and physical function at baseline and 5-year follow-up

	CRP		ESR		ASDASCRP		BASDAI		BASFI		BASMI
	Baseline	5-year follow-up	Baseline	5-year follow-up	Baseline	5-year follow-up	Baseline	5-year follow-up	Baseline	5-year follow-up	Baseline	5-year follow-up
FC Baseline	0.280	0.209	0.222	0.169	0.260	0.240	0.190	N.S.	0.166	0.166	N.S.	N.S.
p-value	< 0.001	p = 0.007	p = 0.004	p = 0.031	p = 0.001	p = 0.002	p = 0.016		p = 0.034	p = 0.034
FC 5-year	N.S.	0.219	N.S.	0.172	N.S.	0.207	N.S.	N.S.	N.S.	0.154	N.S.	0.207
p-value		p = 0.005		p = 0.027		p = 0.008				p = 0.048		p = 0.008

Abbreviations: CRP C-reactive protein, ESR Erythrocyte sedimentation rate, ASDAS _CRP Ankylosing Spondylitis Disease Activity Score based on C-reactive protein, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, FC fecal calprotectin