Table 2.

Median and Interquartile range (IQR) for Rates of Change of Cortical and Trabecular vBMD for Men From 21 to 49 and ≥50 yr of Age at Different Scanning Sites

	21-49 yr (n = 108)		50+ yr (n = 201)
	Median %/yr (IQR)	p	Median %/yr (IQR)	p
Distal radius
Trabecular	−0.38 (−0.99, −0.09)	<0.001	−0.38 (−0.81, −0.13)	<0.001
Cortical	−0.07 (−0.28, 0.09)*	0.001	−0.32 (−0.52, −0.11)	<0.001
Distal tibia
Trabecular	−0.40 (−1.09, −0.08)*	<0.001	−0.17 (−0.39, 0.00)	<0.001
Cortical	−0.08 (−0.28, 0.09)	<0.001	−0.15 (−0.40, 0.03)	<0.001
Lumbar spine
N	86		174
Trabecular	−0.84 (−1.96, 0.04)*	<0.001	−1.85 (−3.34, −0.81)	<0.001

See the Materials and Methods section for details of scanning sites, p values from signed rank tests are reported for difference from zero. Rank sum p value (*p < 0.001) indicates that men <50 and ≥50 yr of age are significantly different.