Assessment of Bone Mineral Density in Male Patients with Chronic Obstructive Pulmonary Disease by DXA and Quantitative Computed Tomography

Table 2

DXA versus QCT measurements for total number of vertebrae and patients.

(a)

		Normal	Osteopenic	Osteoporotic
Vertebrae ()	DXA	59 (53.1%)	32 (28.8%)	20 (18%)
	QCT	26 (23.4%)	48 (43.2%)	37 (33.3%)
	value	0.0004	0.09	0.03
Patients ()	DXA	16 (43.2%)	12 (32.4%)	9 (16.2%)
	QCT	8 (21.6%)	13 (35.1%)	16 (43.2%)
	value	0.15	0.69	0.04

(b)

Vertebrae		Normal	Osteopenic	Osteoporotic
Stage GOLD; I + II ()	DXA	28 (54.9%)	18 (35.3%)	5 (9.8%)
	QCT	16 (31.3%)	22 (43.1%)	13 (25.4%)
	p value	0.09	0.6	0.09
Stage GOLD; III + IV ()	DXA	31 (51.6%)	14 (23.3%)	15 (25%)
	QCT	10 (16.6%)	26 (43.3%)	24 (40%)
	p value	0.001	0.08	0.2

Dual X-ray absorptiometry.
Quantitative computed tomography.