Serum Matrix Metalloproteinase-3 in Comparison with Acute Phase Proteins as a Marker of Disease Activity and Radiographic Damage in Early Rheumatoid Arthritis

Table 4

Correlations of SAA and CRP with clinical and laboratory indices of disease activity.

Parameter	SAA*	CRP*
	0.25	0.35
SJC	0.007	0.0001
	115	115
	0.29	0.39
DAS ESR	0.002	0.0000
	115	115
	0.54	0.63
SDAI	0.0000	0.0000
	115	115
	0.18	0.22
NODULE	0.047	0.014
	115	115
	0.83	—
CRP	0.0000	—
	115	—
	0.24	0.25
RF	0.009	0.006
	115	115
	0.21	NS
aCCP	0.023	—
	115	—
	0.36	0.38
Erythrocyte sedimentation rate	0.0001	0.0001
	115	115
	−0.34	−0.26
Haemoglobin	0.0002	0.005
	110	110
	0.26	0.24
Platelets	0.005	0.01
	110	110
	0.21	0.19
Erosion	0.023	0.04
	110	110
	0.20	0.32
Larsen score	0.044	0.0006
	106	106
	NS	0.28
Tender joint count	—	0.002
	—	115

*For each pair of values, the correlation coefficients are uppermost with the corresponding 𝑃 and 𝑛 values underneath.