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Table 2 BoneXpert parameters in PsA patients stratified by Psoriatic Arthritis Ratingen Score Proliferation and Destruction Scores

From: Psoriatic arthritis is associated with bone loss of the metacarpals

Proliferation Score

BHI

MCI

T-scoreMCI

T

W

Destruction Score

BHI

MCI

T-scoreMCI

T

W

0 (n = 34)

5.85 (0.42)

0.596 (0.052)

−0.427 (0.927)

2.04 (0.26)

8.02 (1.05)

0 (n = 41)

5.88 (0.41)

0.600 (0.053)

−0.346 (0.926)

2.07 (0.25)

8.02 (1.02)

1 (n = 28)

5.74 (0.43)

0.576 (0.051)

−0.762 (0.911)

1.99 (0.25)

8.24 (1.05)

1 (n = 14)

5.73 (0.39)

0.575 (0.039)

−0.805 (0.710)

1.99 (0.23)

8.23 (1.07)

2 (n =17)

5.32 (0.45)

0.531 (0.034)

−1.611 (0.648)

1.81 (0.30)

8.37 (1.13)

2 (n =12)

5.44 (0.45)

0.551 (0.026)

−1.281 (0.547)

1.84 (0.29)

8.06 (1.14)

3 (n = 14)

5.19 (0.47)

0.505 (0.041)

−2.138 (0.819)

1.73 (0.26)

8.57 (0.84)

3 (n = 16)

5.17 (0.44)

0.513 (0.029)

−1.981 (0.627)

1.73 (0.24)

8.32 (0.80)

4 (n = 11)

4.41 (0.52)

0.427 (0.045)

−3.616 (0.838)

1.39 (0.23)

8.58 (1.20)

4 (n = 13)

5.10 (0.49)

0.494 (0.043)

−2.300 (0.839)

1.72 (0.27)

8.78 (1.03)

5 (n = 8)

4.42 (0.75)

0.415 (0.051)

−3.813 (1.035)

1.43 (0.39)

9.04 (1.20)

Absolute and relative changes between score 0 and score 4

−1.44

 − 24.6 %

−0.169

 − 28.3 %

3.189

−0.65

– 31.9 %

0.56

7.0 %

Absolute and relative changes between score 0 and score 5

−1.46

 − 24.8 %

−0.185

  30.8 %

3.467

−0.64

  30.9 %

1.02

12.7 %

Significance

<0.01

<0.01

<0.01

<0.01

NS

Significance

<0.01

<0.01

<0.01

<0.01

NS

  1. Data presented as mean (standard deviation)
  2. BHI Bone Health Index, MCI Metacarpal Index, NS not significant, PsA psoriatic arthritis, T cortical thickness of the metacarpal bone, W width of the metacarpal bone