Table 4.

Global and regional TPA, TPN, and APA for the entire male cohort, the young male cohort [20–29], and the elderly male cohort (65–78). All table entries report means ± SEM.

Males		TPA	TPN	APA
		mm2/mm2	mm−2	mm2
Entire cohort	Endosteal	0.059 ± 0.004	1.248 ± 0.08	0.044 ± 0.001
	Midcortical	0.057 ± 0.005	1.088 ± 0.09	0.049 ± 0.001
	Periosteal	0.035 ± 0.004	0.837 ± 0.08	0.039 ± 0.001
	Global	0.048 ± 0.003	0.999 ± 0.07	0.047 ± 0.001
Young cohort	Endosteal	0.048 ± 0.007	1.068 ± 0.16	0.045 ± 0.002
	Midcortical	0.034 ± 0.005	0.786 ± 0.13	0.042 ± 0.002
	Periosteal	0.021 ± 0.003	0.577 ± 0.09	0.035 ± 0.001
	Global	0.032 ± 0.004	0.767 ± 0.11	0.042 ± 0.002
Elderly cohort	Endosteal	0.078 ± 0.008	1.496 ± 0.12	0.046 ± 0.001
	Midcortical	0.091 ± 0.014	1.559 ± 0.21	0.049 ± 0.002
	Periosteal	0.050 ± 0.008	1.152 ± 0.18	0.040 ± 0.001
	Global	0.070 ± 0.008	1.334 ± 0.07	0.053 ± 0.003