Table 3.

Multiple linear regression models for initial total SJCs and change in SJCs^a

Initial SJCs (n = 43, r2 = 0.260, F = 8.360; P = 0.001)b					ΔSJCs (n = 41, r2 = 0.245, F = 13.974; P = 0.001)c
Variables	Parameter estimate	SEM	t-value	P value	Variable	Parameter estimate	SEM	t-value	P value
Intercept	5.093	1.712	2.975	0.005	Intercept	-5.192	1.148	-3.500	0.001
Initial CRP	0.147	0.071	2.067	0.045	ΔS100A8/9	0.001	0.000	3.738	0.001
Initial S100A8/9	0.001	0.000	2.010	0.051	-	-	-	-	-

^aSJCs, swollen joint counts; SEM, standard error of the mean; CRP, C-reactive protein. r² values are adjusted. ^bExcluded predictors are age and initial S100A12. ^cExcluded predictors are age, initial S100A12, initial S100A8/9, initial CRP, ΔS100A12 and ΔCRP.