Table 1.

Univariate analyses and interaction with incident (i)/prevalent (p) RA (predicted variable – mHAQ)

Predictor	RA	β (95% CI)	p-value*	p-value**	% variability explained – R²

DAS28-CRP	all	0.112 (0.100; 0.123)	<0.001	0.510	44.5
	i	0.120 (0.093; 0.146)	<0.001
	p	0.110 (0.097; 0.123)	<0.001
GSsynUS	all	0.008 (0.004; 0.011)	<0.001	0.038	3.2
	i	0.014 (0.007; 0.021)	<0.001
	p	0.006 (0.002; 0.010)	0.002
PDsynUS	all	0.012 (0.008; 0.016)	<0.001	0.018	4.3
	i	0.021 (0.012; 0.029)	<0.001
	p	0.009 (0.004; 0.014)	<0.001
GStenUS	all	0.018 (0.002; 0.035)	0.032	0.078	1.7
	i	0.045 (0.011; 0.080)	0.010
	p	0.010 (0.000; 0.020)	0.316
PDtenUS	all	0.024 (0.012; 0.037)	<0.001	0.032	2.0
	i	0.053 (0.024; 0.083)	<0.001
	p	0.017 (0.010; 0.024)	0.013
ES	all	0.009 (−0.003; 0.021)	0.145	0.062	0.3
	i	−0.021 (−0.055; 0.013)	0.216
	p	0.013 (0.001; 0.026)	0.047

*p-value of significance of given β. **p-value of significance of difference between incident and prevalent RA.