Table 1

Correlation of OPG and sRANKL with clinical data

				OPG		sRANKL
Clinical data	Mean	SD	No	r_s	p Value	r_s	p Value
OPG, osteoprotegerin, sRANKL, soluble receptor activator of NF-κB ligand; ESR, erythrocyte sedimentation rate, CRP, C reactive protein; RF, rheumatoid factor; DAS, disease activity score.
sRANKL (pmol/l)	0.90	0.85	60	0.21	0.10
ESR (mm/1st h)	37.3	24.2	60	0.29	0.03	0.004	0.77
CRP (mg/l)	38.2	30.5	60	0.15	0.24	0.09	0.49
RF (U/l)	418.5	1584.8	60	0.02	0.90	0.05	0.71
DAS	3.44	1.09	60	0.21	0.11	0.02	0.86
Larsen score	49.7	44.7	60	0.32	0.01	−0.02	0.85