Fibroblast growth factor 21 (FGF21) is a sensitive marker of osteoporosis in haemodialysis patients: a cross-sectional observational study

Table 6 The area under the curve (AUC) of separated and grouped independently associated factors of L1 CT attenuation in ROC curve analyses in HD patients

Variables	All HD patients		HD patients with anuria		HD patients without anuria
Variables	AUC(95 %CI)	Pvalue	AUC(95 %CI)	Pvalue	AUC(95 %CI)	Pvalue
Age	0.712 (0.644,0.779)	< 0.001**	0.756 (0.681,0.832)	< 0.001**	0.754 (0.685,0.822)	< 0.001**
FGF21	0.710 (0.638,0.781)	< 0.001**	0.657 (0.558,0.755)	0.001**	0.691 (0.606,0.775)	< 0.001**
Age + FGF21	0.829 (0.776,0.882)	< 0.001**	0.837 (0.778,0.896)	< 0.001**	0.833 (0.772,0.894)	< 0.001**

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