. 2015 Nov 11;16:188. doi: 10.1186/s12882-015-0182-6

Table 2.

Areal and volumetric bone mineral density, T scores and diagnosis

	Bone Mineral Density		T-score		Diagnosis
	Mean (sd)	r^a	Median (IQR)	r^a	% Osteo-porosis	% Osteo-paenia
DXA: Proximal femur	946 g/cm² (179)	1.0 (ref)	−1.2 (−1.8, −0.3)	1.0 (ref)	7 %	53 %
DXA: Neck Of Femur	912 g/cm² (168)	0.85, P < 0.001	−1.2 (−1.9,-0.4)	0.90	13 %	50 %
DXA: Neck Of Femur	912 g/cm² (168)	0.85, P < 0.001	−1.2 (−1.9,-0.4)	P < 0.001	13 %	50 %
DXA: Distal Radius	663 g/cm² (119)	0.58, P < 0.001	−1.1 (−2.1,-0.5)	0.45	17 %	43 %
DXA: Distal Radius	663 g/cm² (119)	0.58, P < 0.001	−1.1 (−2.1,-0.5)	P < 0.001	17 %	43 %
DXA lumbar Spine	1163 g/cm² (208)	0.73, p < 0.001	−0.2 (−1.4, 0.7)	0.70	9 %	28 %
DXA lumbar Spine	1163 g/cm² (208)	0.73, p < 0.001	−0.2 (−1.4, 0.7)	P < 0.001	9 %	28 %
QCT: lumbar, Trabecular	139 g/cm³ (43)	0.68, P < 0.001	−1.2 (−2.4, −0.3)	0.61	9 %^b	20%^b
QCT: lumbar, Trabecular	139 g/cm³ (43)	0.68, P < 0.001	−1.2 (−2.4, −0.3)	P < 0.001	9 %^b	20%^b
QCT: Lumbar, Cortical	469 g/cm³ (32)	0.18, P = 0.17	n/a	n/a	n/a	n/a
QCT: Lumbar Total	606 g/cm³ (50)	0.65, P < 0.001	n/a	n/a	n/a	n/a

^a Correlation using Spearman rank method

^bUsing American College of Radiology cutoffs of QCT trabecular BMD <80 g/cm³ as being suggestive of osteoporosis and 80–120 g/cm³ as being suggestive of osteopenia