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Table 2 Finger joint space width reduction estimated by computer-aided joint space analysis for proximal-interphalangeal articulation

From: Joint damage in rheumatoid arthritis: assessment of a new scoring method

  Z-Score
Average Sharp Score for joint space narrowing PIP (index finger) PIP (middle finger) PIP (ring finger) PIP (little finger) PIP (total)
0 0.18 ± 0.84 0.05 ± 0.43 0.02 ± 0.51 0.02 ± 0.91 0.01 ± 0.46
1 -0.34 ± 1.06 -0.25 ± 1.11 -0.11 ± 0.47 -0.28 ± 0.97 -0.27 ± 0.65
2 -0.47 ± 1.02 -0.43 ± 1.12 -0.41 ± 1.08 -0.35 ± 1.06 -0.42 ± 0.79
3 -1.05 ± 1.08 -1.02 ± 0.39 -0.71 ± 1.27 -0.65 ± 1.40 -0.95 ± 1.14
Difference between score 0 and 3 1.23 ± 0.31 1.07 ± 0.42 0.73 ± 0.35 0.67 ± 0.29 0.96 ± 0.31
Significance, P <0.01 <0.05 <0.05 <0.05 <0.05
  1. Data presented as mean ± standard deviation. Reduction of finger joint space widths from score 0 to 3 using the average Sharp-van der Heijde score as estimated by computer-aided joint space analysis for the proximal-interphalangeal (PIP) articulation.