Table 2 Descriptive statistics.

From: Automated bone property analysis using corrected in vivo dental cone-beam CT data of human wrists

 

Female

Male

Total

BMD DXA (g/cm2)

0.34 ± 0.06

0.40 ± 0.06

0.36 ± 0.06

BMD dCBCT Whole bone (g/cm3)

0.89 [0.84 ; 0.88]

0.84 [0.73 ; 0.91]

0.88 [0.81 ; 0.90]

BMD dCBCT Cortical (g/cm3)

1.54 ± 0.08

1.51 ± 0.11

1.53 ± 0.09

BMC DXA (g)

1.31 ± 0.31

1.88 ± 0.30

1.50 ± 0.40

BMC dCBCT whole bone (g)

2.24 [2.08 ; 2.34]

3.66 [3.27 ; 3.70]

2.34 [2.15 ; 3.27]

BMC dCBCT cortical (g)

1.08 ± 0.18

1.46 ± 0.27

1.21 ± 0.27

C.Th (mm)

1.25 [1.25 ; 1.32]

1.30 [1.09 ; 1.34]

1.25 [1.19 ; 1.32]

Trabecular BV/TV (%)

44 ± 5

43 ± 1

44 ± 4

Tb.Th (mm)

0.63 ± 0.06

0.62 ± 0.04

0.63 ± 0.06

Tb.Sc (mm)

1.29 ± 0.33

1.19 ± 0.08

1.26 ± 0.27

Tb.Nd (1/mm3)

0.99 ± 0.24

1.07 ± 0.13

1.02 ± 0.21

TV (mm3)

2 580 [2 462 ; 2 706]

4 416 [3 751 ; 4 792]

2 706 [2 505 ; 3 751]

Mean area (mm2)

255 [243 ; 267]

436 [370 ; 473]

267 [247 ; 370]

Stiffness (N/mm)

169 783 ± 24 526

240 613 ± 32 974

193 393 ± 43 456

Strength (N/mm2)

33 ± 4.7

29 ± 4.0

32 ± 4.9

FMAX (N)

8 561 ± 1 107

12 153 ± 1 509

9 758 ± 2 119

TBV (mm3)

1 561 [1450 ; 1623]

2 499 [2 170 ; 2 605]

1 623 [1 495 ; 2 170]

BV/ TV Whole Volume (%)

60 ± 6

56 ± 4

59 ± 5

  1. Mean values +/- standard deviations or median [first quartile ; third quartile] depending on whether the parameter is normally distributed according to the Shapiro-Wilk test
  2. BMD bone mineral density, DXA dual energy absorptiometry, CBCT cone beam computed tomography, Whole bone volume cortical + transitional + trabecular parts, BMC bone mineral content, C.Th cortical thickness, BV/TV bone volume over total volume, Tb.Th trabecular thickness, Tb.Sc trabecular spacing, Tb.Nd trabecular nodes, TV total volume, FMAX maximum force, TBV total bone volume
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