Table 1.

Spearman's correlation coefficients

	Baseline (n=217)			12 months (n=166)

	Calprotectin	CRP	ESR	Calprotectin	CRP	ESR

Calprotectin, μg/L	NA	0.66**	0.51**	NA	0.33**	0.43**
CRP, mg/L	0.66**	NA	0.63*	0.33**	NA	0.26**
ESR, mm/h	0.51**	0.63**	NA	0.43**	0.26**	NA
SJC44 (0–44)	0.30**	0.37**	0.24**	0.10	0.12	0.11
RAI (0–78)	0.21*	0.32**	0.16*	0.10	0.16*	0.12
Ultrasound GS-score	0.45**	0.41**	0.29**	0.20*	0.08	−0.01
Ultrasound PD-score	0.42**	0.35**	0.35**	0.26**	−0.02	0.03
Ultrasound total score	0.46**	0.40**	0.33**	0.22*	0.07	0.00

*p<0.05, **p<0.001.