Table 3.

Hierarchical linear regression analysis.

Variables	β	t	P	Collinearity
				Tolerance	VIF
WORMS-synovitis	0.287	3.339	<0.001	0.764	1.309
PPT-knee	−0.030	−0.266	0.791	0.432	2.322
PPT-forearm	−0.226	−2.142	0.035	0.509	1.966
TSP-knee	0.437	5.035	<0.001	0.751	1.332

PPT, pressure pain threshold; TSP, temporal summation of pain; VIF, variance inflation factor; WORMS, Whole-Organ Magnetic Resonance Imaging Score.