Table 3

Partial rank correlation coefficients (r_partial) obtained from multiple regression analyses with QUS variables and BMD as dependent variables

Independent variables	SOS	BUA	Stiffness	FN-BMD	DF-BMD	Spine-BMD
FN-BMD, femoral neck BMD; DF-BMD, distal forearm BMD.
p<0.05; p<0.005; **p<0.0001.
Age	−0.62***	−0.51***	−0.61***	−0.57***	−0.75***	−0.54***
Height	0.30*	NS	0.25*	NS	NS	NS
Weight	NS	NS	NS	NS	0.43**	NS
Disease duration	NS	NS	NS	NS	NS	NS
Steinbrocker index	NS	NS	NS	NS	NS	NS
HAQ	NS	NS	NS	−0.28*	−0.41**	NS
VAS	NS	NS	NS	NS	NS	NS
Cumulative steroid dose	−0.42**	−0.34*	−0.40**	NS	NS	NS
Quadriceps strength	0.45**	0.36**	0.43**	0.30*	NS	NS
R_multiple	0.81***	0.74***	0.80***	0.74***	0.85***	0.54***