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. 2007 Nov 12;23(3):400–408. doi: 10.1359/JBMR.071103

Table 4.

pQCT Measurement at the Tibia Level

Variable	Men			Women
	Mean ± SD (20–29 yr)	Δ change between 20 and 90 yr		Mean ± SD (20–29 yr)	Δ change between 20 and 90 yr
	Mean ± SD (20–29 yr)	Absolute	Percentage	Mean ± SD (20–29 yr)	Absolute	Percentage
Total BMD 4% (mg/cm³)	330.36 ± 3.89	−61.1	−18.5	309.21 ± 5.90	−91.5	−36.4
Trabecular BMD 4% (mg/cm³)	270.94 ± 12.96	−55.6	−20.5	241.37 ± 9.66	−55.0	−22.8
Total bone area 38% (mm²)	413.30 ± 10.67	37.1	9	327.27 ± 5.90	18.8	5.7
Medullary bone area 38% (mm²)	74.02 ± 7.08	22.2	30	50.28 ± 4.63	57.3	113.9
Cortical bone area 38% (mm²)	339.25 ± 4.39	14	4.1	274.60 ± 2.51	−36.9	−13.4