Table 4.

The mean (standard deviation) of the measured microstructural variability parameters from thoracic 12 and lumbar1 vertebrae. Percent difference in means, significance of these differences and correlations between vertebrae are indicated. The percent differences between T12 an L1 were calculated with reference to T12. Results for average microstructural parameters were previously reported [59].

Parameter	Thoracic 12	Lumbar 1	Difference%	Difference (p)	Correlation (r)	Correlation (p)
BV/TV.SD	0.01781 (0.00717)	0.01657 (0.00558)	−7.0%	0.2114	0.554	0.0002
Tb.N.SD	0.1130 (0.0224)	0.1035 (0.0226)	−8.4%	0.0202	0.387	0.0137
Tb.Sp.SD	0.07810 (0.04318)	0.071632 (0.039431)	−8.3%	<.0001	0.905	<.0001
Tb.Th.SD	0.007661 (0.003370)	0.007475 (0.002812)	−2.4%	0.7148	0.483	0.0016
BV/TV.CV	0.1217 (0.4155)	11.151 (3.23247)	−8.4%	0.0881	0.527	0.0005
Tb.N.CV	0.8849 (0.2447)	8.16003 (2.49851)	−7.8%	<.0001	0.719	<.0001
Tb.Sp.CV	0.1084 (0.2641)	9.8949 (2.53306)	−8.7%	0.0143	0.598	<.0001
Tb.Th.CV	0.6754 (0.2463)	6.52107 (2.21202)	−3.4%	0.5475	0.465	0.0025

An adjustment for multiple tests, taking into account the correlations between all parameters, suggested that a p-value of 0.0174 be considered as significant for an α of 0.05.